Here is something I first noticed my 15 year old niece wearing and since then I've seem them around: wrist warmers made from an old wool sweater. This is so easy. Now when DH accidentally runs that wool sweater through the washer and dryer at least something can be salvaged. Here is what you do:
1. Put your hands through the sleeves to see if they fit. I like them kind of snug, so I will run the sweater through the wash a second time if they are loose.
2. Decide how long you want them to be. Just past your wrists? All the way to your elbow? After you've decided, cut them from the body of the sweater.
3. Now all you need are holes for your thumbs. Since these are already felted, they aren't going to fray. Grab your scissors and cut out a nickle size hole where your thumb can poke out.
4. Voila! You have made fingerless gloves!
I added little crocheted flowers (because that is what I do) but my niece is big on buttons...lots of buttons.