To answer your other question for me I discuss the trade deals with each person I am trading with. So on the main chat thread you may want to post that you have something to trade is anyone interested, then you can discuss with someone using treemail. I usually send rooted offsets, more than one usually because one can die or bloom, so I like sending 2 or 3, that way the person you are sending them to has a backup. But it is an individual preference.
I use a small brown paper bag, some people wrap each chick in a piece of paper towel, I just put it into the bag, write the name on the outside. When I ship these I always ship priority mail to ensure that it reaches the person in no more than 3 days.
I have a question for you, I read that you grow all plants indoors, are you including semps? How do they do for you inside? I haven't had luck growing mine inside