A while back, I saw some low-profile stick-backed plastic things you could put on a sliding glass door to open it. They looked like just clear rectangular grip things. I know people use suction cups too, but I wanted to look into the low-profile ones in hopes that I can actually slide my glass door all the way to the side if I need to (whereas a suction cup would block how far the door slides when they overlap). I cannot find this through using keywords, though. I'm unsure what to search for. I may have seen it on Etsy but I would think they have them on reptile/caging sites as well. Does anyone know what these are called or have a link to any? Thank you.