The best bang for your buck in Roku's current lineup is the $70 Streaming Stick Plus. The plug-in design gives you full 4K and HDR compatibility, and a remote with both voice control and the ability to control your TV's volume and power. Oh, and it streams every major (and hundreds of minor) video services out there, including Netflix, Hulu, Amazon Prime, YouTube, Vudu, Movies Anywhere and HBO Go.
Speaking of Amazon: The company makes the only tablet priced under $100 that we can enthusiastically recommend. The 2017 version of the $80 Fire HD 8 tablet is zippier than ever, and it offers expandable storage, too.
The perfect alternative to the SNES Classic is the Nintendo 2DS XL. This $150 portable plays nearly all of the same games, plus hundreds more. If that's beyond your budget, though, the standard 2DS is just $80. The one snag: The standard 2DS can't play most SNES titles from Nintendo's library. It does, however, come bundled with either New Super Mario Bros. 2 or Mario Kart 7.
Amazon's 4K Fire TV streaming dongle isn't quite as good as Roku's stick. But it costs the same $70 and it's fully compatible with Amazon's best-in-class Alexa voice assistant. If dad lives in a house full of Echo speakers it's a great way to go.
Amazon's second-generation Echo is more affordable and more attractive than its predecessor. Its ubiquitous Alexa voice assistant handles a boatload of queries and smart home controls, and the audio quality is better than that of the entry-level Echo Dot. And with seven plastic or fabric finishes (oak is shown here), it can fit into any decor.
The $50 Google Home Mini sounds and looks great -- even better than the Amazon Echo Dot. It uses Google Assistant to draw from a bevy of online services to field your queries that feel more helpful and personal than Alexa does. A great, if limited alternative to the Echo.
OK, let's return to the world of non-Amazon devices. If dad expects to be by the pool frequently or likes to listen to music in the shower, the waterproof UE Wonderboom is a great choice. The $99 Bluetooth speaker is about the size of a softball, and it sounds great for its size.
The SoundCore Boost comes from the accessory mavens at Anker. It doesn't sound quite as great as the JBL or the UE, but it's also water-resistant--not fully waterproof though--and it costs closer to $80.
The Bose SoundLink Micro is perfect for anyone who values ultimate portability in a waterproof wireless speaker. You won't find any other speaker this small that sounds this good. Especially for only $99.
Moving from wireless to wired headphones: The Sony MDR-7506 model is a true classic. These first debuted in 1991 -- but they are also arguably still the best-sounding headphones you can get for under $100.
OK, these are the final headphones on the list. The JBL Reflect Mini 2 doesn't have the absolute best sound quality for a $100 pair of headphones, but they're so comfortable that it kind of makes up for it. Also, the reflective cord glows at night when it catches the light. Is dad a nighttime runner or walker? Then definitely check these out.
The Fitbit Charge 2 and Alta HR are our favorite fitness trackers, but they'll cost you closer to $150. You can gift the more minimalist Flex 2 fitness tracker for closer to $60. Unlike those more expensive models, it's fully waterproof, too.
The step-up Kindle Paperwhite adds a gently lit screen for nighttime reading. The unit costs $120, but we're including it here because it's often discounted to $99. It's possible you'll see it that low before Father's Day.
The new Nintendo Super Nintendo Classic packs 21 awesome retro games into one tiny box that hooks up to any HDTV, and it even includes a second controller for two-player matches in Super Mario Kart and Street Fighter II. This one is still terribly hard to find at its normal retail price of $80.