With the price of BW these days, I don't see any reason why that would stop someone from submiting to tgps. Use chameleon or AS/whatnot to automate your time as much as possible.
You could also get into making blogs, get them linked up to a few blog directories and you'll be sending traffic to your sponsor in no time.
There is also toplist/s to play about with, they are still a source of good, targeted niche traffic.
You could also fiddle about with picposts they are still about.
Take your gallery and turn it into a tgp2 gallery and submit that following the tgp2 rules, again another traffic source.
All your Free Sites could be put into a hub page, with money bars. Feed it with your 404 traffic, that should produce a few joins as well.
You could also re-direct via geo any crap traffic on your hub to a fake tgp of yours get that rocking with bookmarkers and that's another (albeit shite) source of traffic.
And then there is mainstreme, but that's a different topic all together.
-N