Make your own slap bracelet; could the same effect be had for an apron using a wider tape measure? I would think it would need to be longer than the plastic apron hoop/curvet. Also would want to wrap in duct tape or something as being so long could do some face or eye damage if sprang back at you unexpectedly. If I try this, I will post the results.
http://www.thenakedscientists.com/HT...nce/exp/title/