I've been running this cheap one off Amazon for the past two years: https://www.amazon.com/gp/product/B06XK9PTP7/

RULLINE Universal 350ml Oil Catch... https://www.amazon.com/dp/B06XK9PTP7?ref=ppx_pop_mob_ap_share Amazon catch can, 4ft of 3/8 fuel line, few hose clamps, I had a small copper 3/8 elbow for hvac line I used to connect the hoses to the manifold but u can use a brass or plastic barb connector if u have it. For the mount I used a scrap metal bracket (had to get alittle creative with that one)

I just bought this one Link

Edit: The catch can is perfect but I’m definitely going to be buying better fittings and hoses, as you probably should do anyway if you’re buying it from Amazon for $25