Little do they know, tunnels are much more effective when they are a) underground and b) not transparent. Good first attempt, kitties, but better luck next time.
User themna was at the airport and forgot their plug-in phone charger. A little bit of wire, an iPhone charge adapter, and a PSP charger....Voila! Phone is charged!
Submitter ariled says their kitchen scale's button cell ran out of power and they didn't have another one. Luckily they had two AA batteries, some wire, and duct tape.