I don't know how we managed in amigurumi world without this stuffing tool! Finally i can put stuffing in those hard to get to places! No longer i have to use the end of my crochet needle (or pens, clay tools, needles yes all the things i tried!)
So they are easy to use and of course you don't only have to use them for your crochet work, i use mine for my miniature bears to!