I like making pesto out of salad bags that are about to go over, just give them a quick nuke to wilt them a little and blitz them up with standard pesto additions (watercress, rocket, spinach pesto using peanut butter is a particular fave).
I made a thing which was curried roast carrot, celery and onion that I then mixed into couscous and baked with yoghurt on top. That was boss