I scream, you scream, we all scream for ice cream! You will need a Key Ring, and, maybe even a jump ring. I will let you know when I get one, or if someone wants to buy one before I try it out and they find out. Warning, item might include sharp objects not safe for children below the age of 3 years. P.S. I do plan on making it available to the public, but not for the time being because I plan on making it a little smaller and checking it out. Also, if I can find a way to make it cheaper, I will.