One bright or ultra bright white LED
One coin cell battery, 3V
Transparent film canister with cap
Toilet paper tube
Needle nose pliers
Glue or double sided tape
Step 1: Homemade battery holder
Use a glue gun to glue tabs, bent side out, into canister cap.
Step 2: Light fixture
Place battery and light into holder, and tape positive side to cardboard tab. Adjust so that the light turns on when the negative side tab is pressed and turns off when it is not.
Step 3: Adding a 'switch'
Carefully place canister onto cap so that the hole is across from the 'negative' side. Insert toothpick and push in until lantern lights up. Pull out slightly so that it turns off. Adjust as needed.