Paint Strainers: You can usually get two sizes, one or five gallons, that are designed to fit inside plastic buckets. They are great for straining honey, liquid wax, or even paint. You can find paint strainers at stores like Home Depot, or at Amazon.com.
Double Boiler: Nice to have for melting wax. Don’t go for an expensive one, though. They will be pretty much useless for anything else after the first melt.
Crock Pot: Another excellent way to render beeswax. As with the double boiler, though, it’s best to have a separate one for melting wax. These get messy in a hurry.