Clear cylinders at W-mart.sorta

Guys, I’m getting into pumping. Got the mighty vac at HF and today I found some clear drink containers at walmart. In the cycling section. They are intended for water etc. They are colored but see-thru.

$7.

I bought one and drilled a hole in the top for valve insert.

Unscrewed the two inch lid and wham, it is working great!