Great idea. I'll box mine up. It isn't required, but I hope others will bring some nice items to raffle as well.
Since this event is being held at my house, I don't feel right asking anyone to help cover costs, but we can maybe regard bringing an item, or items, to raffle as a kind of (entirely voluntary and totally optional) "admission."
I think the photos would be the items of greatest interest, honestly—and fortunately those are the easiest to bring with you. If you're willing to give us a guided tour through a little slideshow, Mike, I'm planning to have a big wall-mounted TV available for you (to which you can connect your laptop).
Maybe some of those obscure items of which you don't have molds but only reference masters would be of interest—stuff like the item Elvis mentioned, for example. This is a crowd of die-hards, so you can feel free to venture into the weeds of the more obscure stuff, since most of us are intimately familiar with most of the more prominent props.
There is, of course, always continued interest in the mysterious Mark VI tricorder internal mechanism, however, if you can turn up good photo references on its internal construction.