glass is defn the way to go, just buy a decent scoring tool(not the kind you get from home depot) and find some cheap glass, there are tons
of good places, furniture consignment stores, even ikea had cheap
glass shelves just make sure that its not tempered glass and your golden,
its not an accident waiting to happen if you wear goggles, gloves, somekinda respiratory mask if your gonna grind it, it only takes a few practice tries before your confidence will go up...
i originally tried to cut 1/8 inch glass but that was hard, but then i got
some 3/16 stuff and it snapped right on the line after 1 try...
yes i still cut a bad piece here and there, but most of the 25-30 cuts i've
made in the last few weeks have come out great.