Keith sitting on the floor beside Hunk while he repairs something and the two are talking about silly things that happened back on Earth and every now and then Keith passes Hunk a tool he needs and they both just really love being in each other's company.
see also: Hunk teaching Keith some of the basic stuff, like what tools are best for what kinds of problems, so Keith can join in and help him fix stuff. Keith enjoys helping, especially since Hunk will kiss his cheek when he gets something right. Also Hunk tells Keith a lot of embarrassing Lance stories so he feels less bad any time Lance tries to pick a fight with him. Its hard to get mad at Lance calling him “Mullet” when Hunk has stories about when they were kids and Lance dressed like an 80s rocker for a month bc he thought they were cool