It's funny that this topic should come up. I was using my blending tool yesterday. Without thinking about it, I pulled the sponge up and went to replace it with a different sponge.
My velcro thing had disappeared. I looked for 20 minutes before I called in my DH and DD. We looked for another 20 minutes before my DD picked up the discarded sponge and said "Mom, it's here. Dork!" Seriously, I'm not ever going to ask them for help again.