I have not done these, so this is just something you can look into. I have seen on craft shows items to make buttons, magnets for the fridge, etc. by using clay (used on items that won't be washed, or taken off prior to washing) or, also have seen plastic beads that when heated will melt and can be shaped into whatever you want. I'm sure there are other items out there that would work. My motto has always been, when you can't find what you want, make it!