Giveaway items
I mention my favourite from EPICon here: http://www.erecsite.com/2007/03/epicon-epilogue-favorite-promo-items.html One of the things I realisd is that people *really* appreciate things to take back for their kids--little toys. Bookmarks etc only really interest people if they are autographed. Even useful items get passed over if everyone has them (e.g. pens)

giveaway bags
What have authors placed in their giveaway bags (or goody bags), in addition to post cards and pens?