I am part of a group offering support to people with Amniotic Banding Syndrome (which I also have). It means that we have either missing or little fingers or no hand at all.
Folks in that group are looking for people to make custom mittens and gloves for hands with different number and sizes of fingers.
If you are interested in a knitting challenge drop me an email at Pastor.James@kingofkingslc.org and I'll try to connect you with a family who could use a custom mitten or glove.
I make all my own gloves with 5 fingers on the left side and 4 on the right -- all of varying sizes. I use a fingerless glove pattern and then modify for the number of fingers and lengths. The other adaptation I have found useful is to make the part that goes down the wrist about 1.5 to 2 times longer than the directions. With only a few fingers to add "grip" of the glove to the hand they fall off easily and making the arm part longer helps keep them on.
The other thing needed is mittens to fit the ends of arms with no hands whatsoever. I have no idea where to start but perhaps a very small stocking cap with a string to tie back to the elbow.
Thanks in advance -- James