I run into it occasionally in comments (why do I even bother reading them) or tweets to announcements of any goodies a publisher throws in for a pre-order bonus, launch edition, or collector's edition.
I've noticed in the last few months that there are some people who just don't like SteelBook cases. I think they're pretty neat, personally, though I'd like it to be included in addition to the regular box, not as a replacement.
I think the recent trend of stickers is pretty lame as I'm not the sort to put stickers on my stuff, and they don't really hold up well for display or as a nice thing to show off. I love artbooks if they're done well, and I didn't care for soundtracks for a long time up until just about two years ago (when I started streaming) because I like playing the music from the soundtrack at the beginning and end of the cast.
Shirts can be cool, but it's almost always a men's large sized shirt, so I can never wear it. Figurines are sweet, but I never take them out of the box, really because I don't want to break up the collector's item (the whole package).
What do you all think? Is there swag you love or hate when you see it announced? Is there anything that turns you off completely?