The ZS100 delivers the upgrade in image quality compared with a phone that you'd expect from a camera with a 1-inch sensor, has enough of a zoom lens for a lot of framing flexibility and is sufficiently fast to capture life in action. Plus it supports 4K video for the sharpest capture possible.
For your favorite street photographer, the X70 has a relatively large APS-C size sensor for the best images in a compact under $800. It has a fixed focal-length lens, though, which is why cameras with smaller sensors may have the same price.
Canon usually has aggressive discounts around the holidays, and its Rebel series tends to get cheaper than competitors. If you're looking for a dSLR bargain gift, this one will probably be well received as a first dSLR.
The A6300 is a really good, fast mirrorless interchangeable camera. Sony announced new model, the A6500, which should be available in time for the holidays, and which fixes some of the complaints we had about the A6300. So look for the A6300's price to drop, making it an attractive gift, and if it doesn't or if it disappears, check out the A6500.
A small dSLR alternative, one of the best things about the Micro Four Thirds interchangeable-lens cameras is that the lenses are tiny -- you can throw five in your bag and barely feel them. The E-M10 Mark II is fast, with solid photo quality and a useful feature set, plus Olympus' policy of adding features via firmware upgrades makes this one a long-term choice.
The GX85 is an excellent, feature-packed interchangeable-lens camera for the money; the compact body and small lenses available for the Micro Four Thirds system make this camera an excellent choice as a gift for travellers.
Nikon's current just-above-entry dSLR is great for everything the family photographer wants; the only significant downside is that it's got a smaller grip than many other dSLRs, so you may want to make sure your giftee has relatively small hands.
Got a podcaster or garage rockstar on your list? The 4K-resolution Livestream Mevo and its intuitive iOS app allow you to replicate the look of a multicamera shoot using just one camera and your iPhone.