Science Fair Project.
Working together, they designed a flashing-LED project that uses Wire Glue instead of solder to make connections. They even used aluminum foil to make the battery connections, something solder couldn't do, and it was a lead-free project too. The result was a fun project that demonstrates the basics of electricity, and it was made without soldering.
Charlie J. of Bison, North Dakota wanted a science fair project for his son that would be fun to build and relevant to today's environmental issues.