I didn't have very strong contact with many professors during my undergraduate degree, and it's been very difficult to find 3 professors who are willing to write recommendation letters.
I was, however, the president of a club with two other team members of executive level (secretary and treasurer). I am considering having ONE of my recommendation letters be from BOTH of these team members, as I think it would be unique and help me to stand out to admissions people. The letter will of course be professionally written and not "from friends", rather from coworkers/associates.
Any thoughts on this? Is it unique like I'm hoping, or is it just unprofessional?