A smartwatch for $20. It's no Apple Watch but definitely will be mistaken for one.
Retrofit your home without having to spend a ton on home automation solutions. The Brilliant Home Control systems fit in existing systems and work with Google and Amazon Alexa. I connected it to Sonos so I can walk in a room and control Sonos at the entrance and see what's playing.
I've put about 50 miles on this electric skateboard (and had one pretty nasty spill). With dual motors, this thing packs a punch for how much it costs - it's relatively cheap compared to other models but has a lot of the tech you need to roll around at a decent speed around the neighborhood or to/from work.
An easy way to get a bank account for your kids, teach them about savings, set up allowances along with a debit card and Apple Pay.