Provide Value
If your coin provides some tangible value to it's users, miners, base, ect. then that truly is the best marketing tool you could use.
We are in the middle of cryptomania now. People do not look into value, they are just interested how much X-times their coin will rise before they dump it. I did years of value investing on major stock exchanges and know what happens when people forget about value. But the time has not come yet