In need of Mini Workouts!

Im a full time nursing student and a mother of a 3yr old..my life is pretty crazy! I usually go to the gym 2-3 times a week however it doesn't seem to be enough. Im in need of some at home mini workouts that I would be able to throw into my day. My days start at 5am and usually end around 1030 when i crawl into bed! Long days!- i know! So any help would be greatly appreciated. Oh also I do not have a treadmill at home. Thanks everyone in advance!