My first fun little physical project that is not a coding project or school related! [hint hint check out the github for fun little coding projects ;)]
I installed this contraption in a old refrigerator I brought for cheap off of Facebook Marketplace.
Basically it is just a refrigerator but now it has a soda dispenser for your carbonated drink cravings!
40 ft of Bev-Seal Ultra Tubing (or any tube like material)
$0.38 per ft
Carbonator (I used the McCann's Big Mac Soda Carbonator E Series 115v Model E400397)
Found one used for $198 off Ebay
Pneumatic Syrup Pump (I used the Flojet T5000)
 $59.99
Post-mix Beverage Valve (I used the Cornelius UF-1 Push-Button Valve)
$150
24V Power Transformer (I used the Revo Transformer)
$16.42
5 ft of 8" PVC pipe
$38.29
4 8" PVC pipe caps
$56.87
CO2 Tank
$43.33