What Professions do you have?
Have you considered other twinks?
I face the same problem you do, except im just too cheap to buy WoD and MoP isnt very fun so i just chill on 70.
A normal day consists of me doing JC daily in Dal for the token.
Scanning AH for sweet deals cause I only have 1 level 70 on the realm... hard to get gold :/.
max all your proffs. First aid, cooking,archaelogy,fishing
If this type of stuff bores you stop reading and continue after paragraph
Then farming Rep. Im running Tailoring/JC and I want to get every recipe attainable if not atleast most. Im working on BC rep right now and farming primal fires for the sets. The rep im working on atm is scryer cause i accidentally went scryer on my priest so mightaswell make it all the way then go to aldor for the bis necklace.
After I finish BC rep ill go to Vanilla then to WoTLK.(including the fishing rep Kaluak)
I'm also working on building anti fire, anti frost, anti shadow sets and a max stam set to mess around with.
I'm also thinking of leveling a DK to 80 or maybe 90 with mining to farm titanium ore.
You can try raid, try getting a group see if you can do some wotlk raids, not sure if this is still possible.
Battle Pets is a great way to waste time.