How to Make Sponge Bombs . Sponge Bombs are a great alternative to water balloons. There are no messy balloon bits to clean up, and the sponge bombs can be used again and again. These sponge bombs are great for active playtime fun all Summer long!
Make your own Sponge Water Bombs (alternative to water balloons). Cut sponges in strips crosswise, then stack 4 wide, 2 deep and tie very securely in middle with fishing line. Soak, play, have sponge water fight!