There's really not much to do this time of year. Maybe skiing. Might be something at the Mahaiwe. There are some antique shops. You're definitely not going to find an Asian market in the Berkshires worth visiting. I'm not sure you can find one at all.

Mass MoCA is great if you want to drive an hour to the other end of the county. Otherwise maybe just plan to chill in downtown GB. Visit some shops, catch a movie or something.