They say your time is much better spent guaranteeing people who already will vote blue show up to polls than trying to change the opinion of people who will vote red.
So that looks like asking people "do you have a plan to vote?" And perhaps in a less nosy phrasing: "When will you vote?" "How will you get there?"
People verbalizing a plan makes them more likely to follow through.
There are many places you can sign up to go canvassing, which is great. I would suggest in addition to and maybe before that, make a list of everyone you know and would feel comfortable talking to, and talk to them about voting. You will get much more mileage from existing relationships. (It's like how sales differentiates a warm lead and a cold lead)
Once you've exhausted that list then every little bit still helps. I do think high density events like farmers markets, community gatherings, concerts, games, etc have better rate of contact than door to door.