For example: Whenever you walk into a store, ask if they accept BTC or cryptocurrency etc. ? Even if you know they don't. It primes the cashier or manager to better acknowledge the next customer who asks a question like this and also starts a conversation or beginning to something new.
What would be your idea?
In my opinion, one of the best way to help is by promoting, patronizing projects that will be helpful to cryptocurrency and its users. An exchange that offers small to zero fees, an app that lets you pay with crypto, patronizing establishments that accepts Bitcoin.
And most of all, the best way to help Bitcoin grow is by using it as a currency rather than as an asset. If we continue to use Bitcoin as an asset, only those whales will benefit from it.