Hey there,
I have an injury on my left index finger due to martial arts training and can't play bass right now

Are there any right-hand-only (I'm BEGGING you to quit the masturbating jokes

) excercises I could practice until my hand is healthy again? I just can't sit at home, looking at my bass and not be able to touch or play it (is this what a [bad] marriage feels like?)
I'm right-handed, so left hand is my "gripping" (what's it called properly in english?) and right hand is my picking hand.
Thank you very much in advance!