It is very easy and cheap to diy a sunjar !My circuit can test the sunshine and the leds turn on only at night and turn off while the sun rise again:)
Step 1: The circuit programme
The units can easilly got by electronic pcb junks!
Step 2: Assembling
Now let us see how to make it by one wire one pin,and one wire one pin :)
Step 3: Just have fun from your sun jar!
Collect the sunshine and keep it until night to use.