Sponge Bombs - Easier clean up than water balloons

So...if I haven't already said this on my Foodie Blog, I love Pinterest!!!  I also love water balloons.  I just don't like filling them or cleaning up the bits of broken balloons.  So a few months back I repinned this from Inner Child.  Sponge Bombs.

So yesterday I have the brilliant idea to make some.  Did you know the dollar store does not have sponges without the scrubby side?  Well Walmart does!  So I bought out their remaining packages.

The pictures are pretty self explanatory.  I clipped the end of the zip tie with a cuticle trimmer and there were no sharp edges left.  Miss V didn't get to use them last night since it started POURING.