Suggestions for small classroom solar project?

Greetings. I teach a 5th/6th grade class. I would like to try some sort of classroom project using solar cells to create usable electricity. There is a foundation that will give up to $1,000 grants, so that would be my budget. I'd like to run something in the room "off the grid". We have a big electric pencil sharpener, a dorm-size refrigerator, a small microwave oven, a drip coffee maker, and a desk lamp on my desk (for when the lights are out - like when watching a video). I wouldn't be allowed to mess with the overhead lighting (4-foot flourescent tubes) and computers. I could mount a solar cell on the roof and run wires myself.

I've never done a solar project and am boggled by all the choices. I'm guessing I'd need a cell, a battery, and some sort of controller?

Any suggestions?

Thanks in advance.

P. S. I tried to post this thread earlier but it seems to have gotten lost. If this is a duplicate, I apologize.