I still have a horrible feeling that I'm missing something, because I just can't quite grasp the problem you're facing. Sorry about that.

Given that you can't trade to trial accounts, why would you not put it on FFA, just activate a drone window (alt-tab, click, whatever) and loot with whoever you want the items going to?

*scratches head*

If you're asking if there's any way to circumvent the trial account restrictions to let you trade what you already have, I imagine the answer would be a resounding "no".