I should be working

I have a job right now that should be interesting and challenging. I work in a sub-field of medical research that is technology intensive and led by smart, if not socially capable PhD s. I continue to ask for new assignments but am given only minor ones that require little thought or effort. Since my role depends entirely on the work of others in my department, I am unable to make my own work, per se. Everyone here knows how little work I have to do and no one seems to give it any thought whatsoever. I'll be leaving here in a couple of months, so that takes the sting out of being a high-priced chair filler, but I wish I was more involved.