We just picked up some dry ice from Unique Services a.k.a. Seattle Sorbet – Lindsey’s Ice Cream factory. This local manufacturer is tucked away next to the YMCA and has lived there a very long time (we had no idea and we have been here twenty plus years). No retail sales on goodies, but they have dry ice. The owner is a great fellow, helpful and friendly. Next time you’re at your grocery pick up some local frozen goodness, or if you need a commercial kitchen rental they do that too. http://www.morethanicecream.com/