A mat is the way to go, as acrylic can always be improved on. DIY could be a piece of Tandy Leather Poundo Board. It is sold in 12 x 24 inch pieces so cutting it should not be a problem. Will cost you about $20, for two.
You must have a verified phone number and physical address in order to post in the Audiogon Forums. Please return to Audiogon.com and complete this step. If you have any questions please contact Support.