I was a user of StumbleUpon at one point. I don't think I ever had an account on Digg.
Candela Obscura might be up your alley as well. I haven't watched yet, but it's an original game and episodes are only 30 minutes.
My wallet and sunglasses have a spot and I have a place to hang house/car keys. That mostly covers it.
I like the book "Jamie Oliver's food revolution" for short, easy recipes. Should take you max 35 minutes at first and then you can get it down to 20.
I played a monk with Hunter's Mark provided as a once a day racial feature, and it was an absolute blast except when I lost concentration. ლ(ಠ益ಠლ)
I was only 3rd level though, so I don't know if the balance gets wonky later on.
The obvious one would be perfect efficiency transformers(?) so you lose no energy to heat.
Cheap handheld advanced medical scanners like tricorders.
I'd rather have an beautiful and functional app tray than (ugh) icons on my desktop, thank you very much.