There are sharp objects used in many crafts such as sewing needles, scissors, straight pins, and hot glue guns. The various machines used to create crafts are not included. You just have to be careful using said crafting items.
When I was 14, I was stabbed by my own knitting needle (a size 8 straight knitting needle). I made the mistake of leaving my knitting on a chair, went to sit down and impaled my upper leg on the knitting needle. Since that day, I swore never to leave my knitting needles on a sitting surface again.