Our early teen model, showing off her solar garden lamp based night light pendant ! These look very attractive and scope exists for kids to make a batch & sell them as "fashionable solar lamps" etc. A small profit could even be made -folks seem happy to pay ~$5 here here in NZ, especially if they could select their own ribbon from a range available!
If you don't feel up to the full pendant conversion perhaps just consider the simpler Solar Easter Egg
Instructable => http://www.instructables.com/id/Solar-Easter-Egg/
Solar Garden Lamps (SGL) are globally available at approx US$2 each, but often are pretty clunky or missing a switch. These new types were compact, full featured & very attractive.
Kid friendly colours- solar lamps have normally been black only
Step 3: Safety alert ...
NOTE- adults should take these spikes away from kids (OR AT LEAST SMOOTH OVER THE SHARP END) as boys especially will promptly play "warriors" with them & eye damage could arise. A more peaceful "waste not want not" could involve blocking the drainholes with hot melt glue -
Step 4: Rain gauge !
- and there's an instant RAIN GAUGE ! Of course it should be higher off the ground to prevent splashes- maybe use 2 tubes to make a taller one?
The lamp module features an energy efficient white LED (Light Emitting Diode), a sturdy switch, internal rechargeable AAA battery and small ( ~2V at 30mA) solar PV ( Photo Voltaic) cell. These nifty parts tempt for enhancement !
BEFORE tackling the more ambitious lamp conversion however, consider simple LED "cover" fun! .All sorts of everyday items light up a real treat when illuminated from within. Perhaps the most rugged translucent covers are table tennis/ping pong balls- simply piece a hole in their bottom & place over the LED. Simple designs & messages can be further written on the ball surface to suit.
Note: Try to avoid using orange table tennis balls as their colour looks rather too "flame" like & at night it may be confused with a real fire...