Support Bitcoin friendly businesses as much as you can though there aren't many outside the space in most geographies.

Other than that try to set people set up on a weekly DCA regime. I start with $10 and then check back every once in a while to see if they'll up it by $5.

Edit: Usually people jump in with at least a couple hundred dollars or more and then start the weekly. Asking for more than $10 a week from someone that hasn't gone down the rabbit hole is a big ask in my experience.