life_w_vagabonds
Explorer
Moderately (read cheap) coolers can be made a little more efficient. Most have no or little insulation in the top. You can drill two small holes in either end and fill it with expanding foam insulation. The second hole is for the air to be pushed out. Allot of time the tops don't fit very tight either. You can make gaskets out of rubber, bicycle inner tubes work well. I am still kicking around the idea of making an insulated jacket. I'm just not that great with the sewing! Yes the Yetis are very nice, but its just a cooler for Petes sake.