Homemade solar panels/cells make a great DIY project for adults and kids alike. One simple way to make a cheap solar panel is by using cuprous oxide, an oxidized form of copper. While this is a great experiment to show how a solar panel works, keep in mind that it will not produce much power at all.
How to make a solar panel with copper plate?
How to Make Solar Cell in Home
Things You'll Need
Sheet of copper
Alligator clips
Multimeter
Electric stove
Plastic 2-L bottle
Table salt
Water
Sandpaper
Sheet metal shears