I recently started using a tablet and pen (Wacom Intuos S if you're curious) for work and I cannot keep track of the pen - it's slim, black, and blends in with my desk. I know that this is the fountain pen community rather than an ergonomics community, but I bet you all have tips for a pen stand/holder. What do you use to keep your pen(s) close at hand?
I have an Esterbrook 2Go pen cup on my desk. It doubles as a pen cup and a pen case.
But It sounds like you just need a pen cup.
BTW, if you decide to go with one of those weightlifting pen crabs, I'd suggest buying it from Ahnitol, the original Japanese designer. Lots of unliscensed knock-offs out there.