Artist Trading Cards. These 2.5 x 3.5 inch little cards are made for sharing. They are also a great way to change gears mentally and are a green craft. I love projects that recycle or repurpose and a lot of my ATC's do just that.
These ones are using bits from other projects I've done and I played a bit with doodling.
For me, ATC's are relaxing to make and so much fun to trade. A small group of us get together each month to create and trade our ATC's.
If you'd like to try them and want more information, you can find a lot online: Google-artist trading cards. I'm happy to try to answer any questions as well.
I hope you try them!