Don't forget about the Byteball airdrop on Sept. 6. Details at https://byteball.org/

The amount dropped for bitcoin holders is not too huge, but there's a nice 10% bonus for anyone holding Byteball, which you can pick up on Bittrex. Plus you get a chunk of Blackbytes which is apparently a privacy-based variant (not traded yet as far as I can tell).

Byteball uses the new directed acyclic graph (DAG) technology in place of blockchains (like IOTA), so there is good potential that it will be superior over the long run when it comes to things like fees. (Anything that gets us out from under the control of toxic miners is worth a look in my book.) The website also lists a number of other initiatives Byteball is working on.