A homemade Christmas tree card (or invitation or gift tag) that doesn't require special equipment or too much work. Use a lollypop stick (or something similar) as the trunk, ribbon as the branches and a gold star as the topper.
This was my most popular card at any class I've ever had. I almost thought that it was too silly (guess that speaks volumes for my customer base, LOL). Obviously they need a sense of humor to keep me as a demonstrator.