I haven't made one, but am now (not so) secretely hoping someone who is undecided will make one for the rainforest swap (my group, of course! lol).
I would do it as Selena suggested: make the normal form for a person bendy, add on a tail. Twist all loose ends nicely in the torso area. You can leave the torso skinny or fatten it up with some wool batting. Then either use floss to cover the body (if I did that, I'd make the hands/feet a lighter color than the arms/legs, and either roving or wool felt for the torso) or wool felt to make a monkey "suit" that goes around the limbs and torso. The head use a bead that you either cover with wool felt everywhere except the face, or paint/dye the bead in matching colors so it coordinates with the body. Ears you can paint using a little half-circle on each side (keeping it simple), or sew/needlefelt onto the head if you cover it in felt (what an awfully structured sentence - hope it made sense).
What a sweet idea!

Please post pictures when you finish
