What am I?

I am a mini solar powered computer. What am I?

related riddles

I can be red, blue, purple, and green. No one can reach me, not even the queen. What am I?

You measure my life in hours and I serve you by expiring. I’m quick when I’m thin and slow when I’m fat. The wind is my enemy.

I am weightless but can be seen. Put me in a bucket and I’ll make it lighter. What am I?