Tips on simulating a ball squeeze with household objects?

Do you guys have any tips on simulating a ball squeeze with normal household items?
I live with my parents, so I can't really have those ballbusting toys.
I can't squeeze them with my own hands either, I find it very difficult. Also, it's very difficult for me to get my dick out of the way in some of the ones I found online, so they didn't work very well...