P2P payment is a big one. I think kids may use it, since they can't get PayPal et al(?). Thought of that yesterday. That's a generation growing up with crypto.
Investing in startups around the world is new (via token sales).
Investing in uncorrelated assets is valuable. Eat gold.
Browser micropayments could get big (Brave browser). Ppl may even get paid for attention in the future.
Iota for the internet of thing (haven't looked into that much).
Hedge against fiat inflation.
Internet ported to decentralised infra if Trump etc start pulling 1984 bs.
Self-driving cars paying toll road via crypto (just made that up).
Solar panels off-setting their cost via crypto-mining. Then ppl have crypto to spend.
Decentralised file systems.
Decentralised storage.
That's a few whilst I whale on my legs.