A soda fridge at work wasn’t getting refilled when empty. Instead of trying to make people less lazy, [Paul] went with making the fridge more needy. The first thing [Paul] did was make a soda ...

[Kedar Nimbalkar] thought so, and built a soda fountain that you can install right inside a fridge. The system is based around using small pumps marketed as “6V DC air pumps” on Amazon.