For something like frostburns, at this point in the season, you would be better off just joining "free" games.
I typically leave all the uniques I am not gonna use on the ground, instead of trying to trade for something else I don't want. I would suggest starting there.
Or maybe find someone that wants the extra players in their game for the increased mf, then just collect his scraps for a while. I know it isn't elegant but, I got my start this season doing that very thing.
So far this year I have been given 2 lidless walls, 1 stormshield, 3 or more shakos, 2-3 burizas, arkaines valor, tons of non pally non sorc torches, full tals and plenty more. Which was more than enough to get a good jumpstart on things.