Mayo is really not difficult to hand whisk. It's pretty much the only way I make it, which is once every week or two. Blenders are nice when you need a larger quantity, but for a small amount I find them to be a nuisance.
I use a stick blender in a 2-cup pyrex measuring cup. Seems to make the perfect amount in about 30s.
I've made mayo with a hand whisk, it doesn't require very vigorous beating as it does patience to not add the oil too quickly.