To make memories on a trip, or anywhere else for that matter, a photo printer is an amazing gift. Our favorite for the best tech gifts under $100 this year is the HP Sprocket Photo Printer. This device instantly prints sticky-backed images from a compatible smartphone app. In the app, you can edit photos with fun stickers, frames and filters before you print, making the stickers cute accessories for stationary, scrapbooking, phone cases and more. The HP Sprocket Photo Printer is truly a memory maker, starting from the movement you take it out the box. Read our full HP Sprocket Photo Printer review to learn more.