We at the Minden Outers Club (just a bunch of guys who meet once a year) decided there had to be a way, even though most of us don't even curl. We felt it was our duty as Canadians. Thus, we spent 2 years developing a "system" to make your own curling stones for about $200 (less if you don't make a full set).
Here is how <-- a link with materials, cost, step-by-step instructions, images and movies of them in action.
Make em and then invite your friends over for drinks and curling on Saturday night...
How about a rink to go with it
how to for a rink