Cuban Crafters (cubancrafters.com) is pretty tried and true. Ashtrays, cutters, humidors, cigars...it's a one stop shop. Can't really attest to their cutters, but I have one of their humidors that has served me well. Xikar cutters are pretty common around the interweb. If you smoke a pipe, Peterson makes a cigar ashtray with a cork knocker in the center for your pipe.

TampaSupremo