Cheap Pumps

I’ve never pumped before and I’m interested in buying a cheap one for starters… I don’t need a gauge nor a pump, just the tube and a hose… Can I use a fish gravel cleaner to start off with just to get the feel of pumping?

There are a lot of posts here about cheap commercial pumps (mostly negative) and positive posts from guys who built their own for very little money and with good results.

I’m remembering the days when I kept tropical fish. Do they make a gravel cleaner big enough to fit your whole cock into when you’re erect? Novel idea. But the bottom might cut into your pubic fat pad or worse, irritate your testicles?