For those with long memories (VD days) a link was posted to a blog by some chap that worked on VW's who came up with a $5 (at the time) doohicky. I made one, still have it somewhere. It worked great.
Basically the plastic hose goes in a box of soda & it syphons it up owing to airflow creating vacuum:

However, I just found a fairly cheap (5x as much...) alternative on Amazon which will be here later today (& is made by a company with the unfortunate name of Wogaboo

While looking for a link to the original $5 soda blaster, I found instructions for a $5 sand blaster version:
https://www.instructables.com/DIY-500-Sandblaster/
