The most useful thing Ive received is a personalized tote bag. Ive used it on all the cruises and plan to use it in the parks.
Other things I like are magnets from the magnet exchanges.
All other FE gifts and pixie dust have been regifted.
Pixie dust , on the UK cruises at least, is mainly stickers, friendship bracelets, slap bands, candy.
One thing to note, which again may only be on the UK cruises, is that people have started "auctioning" pixie dust items and making lists, as in someone will post "I have made 50 pink princess themed friendship bracelets, who would like them," and then people put their room numbers, and the giver makes a list of rooms to drop off their pixie dust items.
Another thing I have seen is that someone will say I'm in room 7635, my little boy loves Spiderman, if anyone has any pixie dust items, he would love them, and then someone will say I have 20 Spiderman keychains, I'll add you to my list.
It wasnt liked that I pushed back on this and said thats not how pixie dust works.