Youtuber Jake Laser made a real liquid Venom suit that actually expands to cover his whole body. The first part of the suit is made form magnetic beads, and then Laser dips his arm into a vat of ferrofluid, a black magnetic liquid saturated with iron particles, allowing the liquid to crawl up onto his arm to then his whole body. The video is really long, so if you only want to see the suit in action, be sure to skip ahead to 18:45.