I had an idea to build out in-wallet video games as a side feature of wallets, and then sell these as extra software features for wallets. Sounds a little silly, but I figure if children can associate gaming (on wallets, but they wouldn't know nor care about that yet until they were of age) with Bitcoin, they'll catch on sooner. This way, Bitcoin moves from just being a monetary medium to also kind of being a gamer-currency true to the word. Like, gamers will be trading BTC not for in-game purchases, but because Bitcoin and gaming have developed together.