For an upcoming shoot, and my own personal entertainment, today I built a cake batter squirt gun from a modified caulking gun framework and a custom ‘ammo’ cartridge. (Easy cleaning and replacement.) One fires by squeezing the trigger and pushing the pressing handle. Not accurate, but it hardly needs to be! Testing will begin as soon as I can fast-talk some targets into coming over. Pictures of the testing will be posted if I have anything to say about it.