This is a simple "take home" solar energy lamp project, based around a dirt cheap solar garden lamp, which suits enthusiastic ten-year-olds (with modest adult help).
All that you need is a solar garden lamp, some tin snips, and some sandpaper. A drill will also be needed, along with a battery, some pliers, and some cardboard.
It's a great little flashlight project for your children, with a bright light, which of course needs to be charged in the sun.
Oh... and if you're working from home these days, be sure to check out Gadget Hacks' Working-From-Home Essentials.