Interest-only loan?
Or just wash, rinse, repeat. We cash out refinanced in 2015, I actually immediately regretted it a little, as the markets had a small slide and the portion that we had invested (about 1/3 of the cash out, the other 2/3 paid off student loans) didn't recover value until nearly 18 months later. But now looking back, that period is a pretty small blip, and I've started to feel the itch to do it again.