Along with all of the previous suggestions... I highly suggest NOT getting the substrate from a store that has snakes. We kept getting reinfested with mites because of this. Stores really struggle with mites once they get in. SO we buy our aspen from our grocery store.
We found our feeding forceps and laser thermometer at a tool store.
Water Bowls can be found at places like Walmart. Dog and cat bowls work well. You don't need something large enough for them to soak in.
Amazon.com carries large reptile hides as well as most any care needs you may need cheaper than you'll find them locally BUT don't buy uth's from there. I got our ultratherms from reptile basics.