San Antonio Current / Kelly Merka Nelson

Presa House Gallery is celebrating its third birthday with two exhibitions featuring new work by three Texans.

Austin-based artists Robert Jackson Harrington and Hector Hernandez — both members of the curatorial collective Los Outsiders — have teamed up for their second collaboration. “Useless Systems” features hybrid, machine-like creations comprised of everything from skateboards to colorful brooms. The catch? All of these systems are utterly nonfunctional. The wide-ranging collab features a variety of media, including sculpture, photography, illustrations and collage.

San Antonio native Ruben Luna’s “Gacho Style” continues his own exploration of combinations of everyday objects like mousetraps and gas cans, which he reworks into mixed media sculptures. His playful pieces draw from his childhood experience, from integrating common refrains like “calma venado”/”calm down, deer” to crafting nunchucks from the infamous la chancla.

The opening reception will feature artist Ed Saveedra as DJ, and vendors GG’s Emporium and Friendors will be slinging wares.

Free, Friday, Oct. 4, 6-11 p.m., on view by appointment through October 26