So yes, I'm sure that this may be common knowledge for some of you, especially those that have played MMO's before, but I think it will help some people out.
Okay, so say you're out fighting baddies and your bags get full, so you drop some trashy items and keep going. But after a while, it gets harder and harder to pick which items to drop, as they are all useful or worth some money. So what do you do?
Well, you could drop some items and keep going, but it would be better if you could keep everything, right? Well, the answer is simple, just mail the items to your alt on the same server.
Yes, that's right, your alt. Everyone that has played an MMO before just facepalmed, I know, but seriously, some people don't know that this is possible or useful.
So back to what I was saying, you mail the items to your alt. The first part of this plan is, of course, to have an alt on the same server as the character getting all the items. Then the only thing left to do is mail them the items. If your main character needs them back, then your alt can just send them back. Simple as that. This is a skill that I use quite often, as I love to use the auction house, so almost nothing is trash in my book.
Well, I hope you learned something and didn't spend too much time QQing over the noobiness of this thread.
Edit: Also, I like to keep an alt right next to the auction house at all times, so I don't have to waste my main's time by going there. I just send the items and money back and forth. Also, I use theBulk Item Mailer addon to send my items quickly.