How many pieces of "like" art work does it take to make a series? I imagine that it is at least 3. This "series" of exercises will likely be turned into wren bags. After Mrs. Wren built her nest in my tool bag in the greenhouse last year, I knew I had to make a better home for her. Time is running out, as spring will be here very soon! I read yesterday that having a wren build her home in the eaves of your house is good luck. I want to make hundreds of bags.... we need a better year!