neat trick if you need some expanding foam but don't want to buy those 1-time use cans from the hardware store....
Gorilla glue (original) mixed with elmers glue. Ratio is around 4:1 with the less part being the elmers (or any water-based) glue. Ratio doesn't have to be perfect or even close. Try it and watch what happens. Stuff expands like 10-20+x, hardens in 30min or so.
Cheap. Keeps well. And you can buy it anytime at walmart, etc.
