How can I fit exercise into my busy schedule?

I work 30 hours a week and I’m in school 15 hours a week. I also spend about 5 hours a week studying and doing homework. I’m struggling to find time to sleep, but I really want to lose some weight. I’ve been trying for a few weeks, but without any exercise, I have no motivation to eat right.

I’m 5’5” and 140 lbs. I’d like to get down to 130lbs, if that helps.

**MY SCHEDULE**
M-Th – Work from 10–5, school from 6–9, studying/homework/dinner from 9–11.
M-F – Work from 10–6.
S-S – A scattered mess of studying, homework, grocery shopping, and preparing for the next week, but no major plans usually.

I am not willing to invest in a gym membership because I know I’d never use it. I do, however own two 3lb dumbells, TaeBo resistance bands, and a treadmill. I’d like to walk every evening outdoors, but I don’t live in an area where there’s very possible and during the week I’m either at work or at school.

I don’t need a whole workout routine…I don’t have the time to dedicate myself to that at this moment. I just need to find a way to be more active to help me lose a few pounds. Any little tips/tricks would help!