Look up Zumba videos on YouTube. Fun
Take the dog for a walk ( if you have one, if not take the neighbors dog)
Go for a swim
If you don't have weights use soupcans.
Whatever you do keep it fun. For cardio I do water aerobics and Zumba. If I had to walk on treadmill I would be bored to tears.
Also, checks your local library for workout DVDs to check out. Then you can swap them out.