Last year, shikishi boards were allowed. However, no one sold them at Fanime last year, so, you had to bring your own. At previous conventions I've attended, the usual shikishi carrier was Kinokuniya, but, the are not listed as a dealer at Fanime this year.
I would imagine that shikishi boards would be permitted again this year.
Regarding gifts, last year, they were allowed. Sometimes you could hand them to the guest and other times there was a box that you had to put them into. I would say that the gift policy depends on the guest and the staffer handling the autograph/panel should let you know about the gift policy at that time.