1) Go to Goodwill
2) Buy up a bunch of yellow plates a couple black ones
3) Break as necessary
4) When you have enough broken pieces, make a mosiac of a happy face
They're asking you b/c you're dependable, and they're not a lot of people like you out there. Sometimes, however, they can take advantage of you, and you can't let them. The word "No" is a powerful one, but not one that you should be afraid of using.