How do I make a snowboard box?

How can i make a Snowboard./ski box for my backyard?

• I pretty much can do the wood part, i just cant figure out what i would use for the slippery top part

• Answer:

  you know the metal stuff they have on the boxes at ski resorts... anyways, you just need to put some flexible sheet metal stuff on top and nail it down. after that put hot wax on the top of it with an iron and there ya go...