What dad can't use a media streamer? Roku's full-featured Roku 3 costs less than $100. That said, the new 2016 version of the Roku Streaming Stick offers similar performance and features for $50 less, so be sure to check that model out too.
Amazon's Fire TV does have some cool advantages over Roku and competing devices, including excellent parental controls, great support and the ability to work with tricky hotel and dorm-room Wi-Fi systems (although Roku recently added that last feature).
The new Fire TV box also delivers next-generation 4K video for less than any other 4K-compatible streamer, although most 4K TVs have built-in apps that can do the same thing. Plus, its new Alexa voice-assistant feature offers cool tricks like replying to your queries about the weather and adding stuff to a to-do list.
Biolite's $80 SolarPanel 5+ is equipped with an internal battery that stores energy from the sun, which means you can keep a charge in reserve your for smartphone and other devices, although tablets will take longer to charge.
JBL's third-generation Flip wireless speaker has a more streamlined, splash-proof design and better battery life (at 10 hours), while the price remains the same at $100. And as with all such speakers, the JBL plays any audio content from a Bluetooth-enabled source -- nearly any smartphone or tablet, and most recent computers -- so long as it's in the same room or relatively nearby. (Want more Bluetooth speaker options? Check out our list of best portable mini Bluetooth speakers, many of which are under $100.)
Yes, tablets and smartphones can double as e-readers. But the $79 Amazon Kindle has a long-lasting battery and a paper-like screen that avid readers will appreciate. And unlike more versatile devices, there won't be any calls, emails or texts to distract the reader, either.
Amazon's latest entry-level e-reader, which occasionally gets discounted to $59, adds a touchscreen, but leaves off the integrated light found in the step-up 2013 Paperwhite, Voyage and Oasis models.
As much as we like e-ink readers, though, an extra $20 will get you a full-fledged color tablet. Sure, it doesn't have much storage (8GB) and it's not super-zippy, but the well-designed Fire HD 6 is one of the better options out there -- especially given its $99 price tag. It does come in a 16GB version for $20 more, and it's also worth mentioning that Amazon occasionally discounts both HD 6 models from time to time, making them even better bargains.
The new Apple TV starts at $149, but the old Apple TV, which doesn't come with the fancy voice remote or have the ability to play games, is just $69.
If your dad's invested in the Apple universe -- if he owns an iPhone, iPad or Mac, or already has lots of movies, TV shows, and music on iTunes -- Apple TV is a better choice than the Roku. And even though it's 3 years old, Apple is keeping its box fresh with new channels every few months.
The UE Roll is a fully waterproof, wireless Bluetooth speaker that sounds quite good for its size. It comes in multiple color options for around $70. For $30 more you can the slightly improved UE Roll 2, which just hit stores in time for Father's Day.
Beyerdynamic makes some great high-end headphones, but lately it's been putting out some value models with great sound. The on-ear DTX 350p, which comes in black or white, sounds better than a lot of headphones that cost twice the price.
Moshi's IonBank battery chargers are on the expensive side, but they are very stylish, with faux "vegan" leather protective coverings and integrated Lightning cables. The IonBank 3K, the smallest of the line, mroe than doubles the battery life of your iPhone (120 percent). It costs around $65.
The new version of the Jawbone Up2 features a redesign that makes the band more stylish and, more importantly, less likely to fall off your wrist. It's leaps and bounds better than the original Up2. Plus, a new firmware update finally adds overdue automatic sleep tracking to this model and previous versions.
The Grind, one of our favorite budget headphones, now comes in a wireless Bluetooth version called the Grind Wireless for $90. It's available in multiple color options and sounds very good for its relatively modest price.
Monster's Adidas-branded Sport Adistar In-Ear Wireless ($100) is one of the better fitting in-ear wireless sports headphones -- and it also sounds decent for the money. Another good choice for dads who run.
A dual-outlet travel surge protector may not be the most exciting thing to give dad, but the Belkin Travel RockStar is more than a surge protector: It also has a built-in 3000mAh rechargeable battery pack so you can juice up your phone or tablet even when you're not near an outlet. The RockStar lists for $60 but can be had for closer to $30 online.
People have always bought Mophie cases to extend the battery life of their phones. But now you can add a new feature to the Mophie list: wireless charging.
That's right, along with the previously released wireless Juice Packs for the Samsung Galaxy S7 and S7 Edge, the company has now released the Juice Pack Wireless for the iPhone 6, iPhone 6s and the Plus versions of both phones. You can pick up these iPhone cases at Apple stores and Best Buy for $99.99. All of Mophie's cases will offer wireless charging in future.
When it comes to iPad styluses, the Apple Pencil has understandably gotten most of the press. But that digital pen only works with iPad Pros.
Adonit's new Pixel ($80), which the company calls its most accurate and responsive stylus to date, with an improved 1.9 mm Pixelpoint tip, is compatible with several iPads -- nine to be exact -- not just the top-end ones.
Like Adonit's two earlier styluses, the Jot Script and the Touch, the Pixel is Bluetooth-enabled and turns on automatically when pressed to the screen when using certain note-taking and sketch apps that have built-in Pixel support. It also ships with a magnetic charger/dock that plugs into the USB port on your computer.
It's not so easy to get an Echo Dot right now (only existing Echo owners can order it through the Echo and shipment dates have been pushed out to summer). But the new mini version of Amazon's cloud-connected, voice-activated speaker does cost less than $100.
We've got a few products here at the end of the roundup that don't quite get in under the $100 mark, but if you're willing to stretch your budget a little, they're worth checking out.
The Harmony Home Control offers the best value for your money in the Logitech line, with an RF remote (no more line-of-sight issues) and the option to use iOS and Android devices as remote controls, too. It costs a little more than $100, but it's still a good deal.
Amazon's Kindle Paperwhite e-reader carries a list price of $119, but sometimes Amazon discounts it to $99. It's not as slick as the step-up Kindle Voyage, but it now sports an HD screen and is a fine e-reader, especially at $99.
For about 30 bucks more than $100, you can pick up a Bose SoundLink Color. It doesn't perform quite as well as the $200 SoundLink Mini, but it's an attractive little Bluetooth speaker that delivers big sound for its size, is easy to tote around and recharges with a standard Micro-USB cable.