Nobody seems to take me serious when I say my cheap setup works well:
ebay catch can, sub $20
hacksaw
sharpie
epoxy
RTV
steel wool
right size hoses; from crankcase is larger than return
small amount of heat wrap
spring clamps
some brass fittings
some Brass Monkey
I drove the car off and on and would get about an ounce every month and a half or so, maybe more right after oil change, less over time. For a daily driver, probably an ounce per month. Somebody asked about a write-up recently and I said check my posts from a year or two ago, but considering it was part of a monstrously long and multi-subject thread, I can 't blame anybody for not digging through all the pages. I can pull it out and post here if you want.