Waller Creek, the largest urban stream in the country, snakes from the northern part of Austin southward, through the University of Texas campus, along downtown, before emptying into Lady Bird Lake. With a new conservancy set up in its honor, Waller Creek is getting a full makeover (or makeunder, as preservation is the point). To test creative interventions, Austin artist/designer/builder Jack Sanders led a pop-up adventure picnic a year ago in Palm Park, a community art-raising that installed massive accordion rings around a campfire and this tree. Sanders regularly stages such happenings through his company Design Build Adventure, a program of camps and workshops for people interested in collaboratively exploring new perspectives on the built environment (the 4-day workshop in Marfa, TX is calling me). Channeling the play inherent in this project, I couldn't resist pairing the tree skirt with its sartorial twin: a fleece dress with hand-woven flare by Hungarian line Nanushka. Fringe for all.