Recipe 1: Warm water
Coconut oil- found at most supermarkets
As with most beeswax recipes you will need a double boiler, a simple pot inside of a pot partially filled with water will suffice. Beeswax and coconut oil are flammable and direct heat should be avoided, not to mention high heat will impart a burnt smell to the mixture.
Add 4 parts beeswax to one part coconut oil and warm on medium heat until all solids are melted. Pour into a muffin tin or other container that will serve as a mold. Enclose in plastic wrap or a container and store in a cool dry place.
Recipe 2: Cold water
Tree resin (also goes by pine resin, rosin, colophony)
It can be found on Ebay and around the web. It can even be collected if you are adventurous.
Use the double boiler as mentioned above, but this time slowly melt 3 parts beeswax 1 part coconut oil and 1 part tree resin. Pour the liquid into a mold and allow to set up.
Note on both recipes, if you don't get the consistency you desire, simply remelt the surfboard wax and add slightly more beeswax(beeswax/tree resin) for a harder tackier consistency or add slightly more coconut oil for a smoother consistency.