Quite a few of the WotLK heroics are easy enough to do, as a freshly dinged 80th.
Unlike Burning Crusade, Wrath heroics are for the most part easy mode.

This level content drops a lot of item level 200 gear.
As well as badges, for (currently item level 226), but the ToC level gear will be badge purchaseable next patch.

I'd run dailies every day, which should make you at least 1000g, more if you run all 25.
I run 15 dailies per toon, 75 per team, and make 1120-1150g in an hour.

That can go a long ways to tanking gear.
And gearing the tank is the single most important aspect of gearing a team.