Non-acid curing RTV silicones as used for automotive gaskets are excellent for grippy bits.
You can also use more putty-like silicones like Sugru, Oogoo, Kintsuglue and others to mold into the grippy bits. You'll want to use gloves for the molding/shaping, as otherwise your fingerprints can be left in the surface. With silicone, just wet a finger to get a smooth surface. For electrical stuff, do check their conductivity properties, though.
Next time you do SMD soldering, prepare a metal or bamboo grill skewer with a sphericalish silicone droplet at the end, like supersized matchsticks, by dipping the ends in gasket silicone. For best results, let it cure a bit between dips, and do a few thin layers. Otherwise it'll end up lopsided, or you need to make a mold to let them sit in while curing.
If you get the right durometer stuff (depends on what kind of hardness you prefer from your pokin' bit), they'll be nice tools to hold small parts in place while soldering. Many automotive gasket silicones can handle the temperatures for extended periods, and don't cost much. I always keep an eye open for cheap, low-durometer (soft) non-acid curing RTV silicone tubes myself.