(...Actually, a lot of the clothes and accessories they offer are made of fleece. Personally, I think it's a bad idea to sell a product for inflated prices that has the name "fleece" built right in.)
Okay, so maybe clothes aren't the right thing for gifts, anyway. Honestly, they're kind of boring, and they always remind you of the time Great-Aunt Hoobie gave you what appeared to be a really cool Lego pirate set, but it turned out that she'd used the Lego box (that she found in a dumpster) to hold ten pairs of tighty-whiteys and a pair of Batman Underoos "just for fun". For your 30th birthday.
On the other hand, a set of Super 8 room key cards could be just the thing for hours of fun - walk in, hand the key to the desk clerk and say "room 118. My key doesn't work" and see if they fix it for you without asking for ID or checking that you're actually a guest. You can also order the little paper key card holders, for more authenticity - at only 7 cents each per 1,000, it's good cheap fun.
Now here's a gift for the rabid anti-smoker in your life - little stand-up "no smoking" signs. You can get 100 for less than $25, so they can have a ball putting up signs everywhere. Hours of fun for you and some heavily sedated friends.
They have all sorts of signs for other needs, too - perfect for annoying houseguests who treat your home like a hotel even though there is no maid to pick up after them. You can decorate your entire guest room with custom-made signs that say "no maid service on weekends", and "breakfast available in the lobby - of the nearest McDonalds".
The classic "clean up after yourself - your mother doesn't live here" takes on special ironic significance when your parents come to stay!
Extend the illusion to the guest bathroom, where you can furnish your guests with the cheapest Super 8 soap they sell. They even sell toilet seat bands - see if you can put enough bands on at once to prevent anyone from using the toilet so that the facilities stay pristine forever!
(They also sell a bunch of other nicer toiletries, but every Super 8 I've ever stayed at was run by cheap bastards who didn't even put shampoo in the rooms.)
Even if you can't think of anyone for whom you'd actually consider buying a Christmas gift, there's no law that says you can't treat yourself to the many delights the Super 8 catalogue has to offer - they have an entire page of cheesy photo prints perfect for decorating your home. You can either pick a print of the State you live in, or a print of a much nicer, more fun State that your guests probably wish they were visiting instead!
(They have customizable stress balls, too. I imagine they're more useful to the host than the guests.)
Finally, the people who always hate whatever you give them - why not just go with the flow and save many agonizing hours of shopping time by buying them a gift you know they're going to hate? There are Super 8 golf balls and tees, pens, pencils, plastic bags (in bulk, for that aunt of yours whom you're pretty sure will end up a bag lady), lapel pins, balloons, Super 8 stickers...
...ice scrapers, letter openers, pens, key chains, coffee mugs, baseball caps, squeeze bottles, car decals, can coolers, ties, robes, blankets, match books, and best of all, a Super 8 logo leather bomber jacket.
In fact, the only thing they don't seem to have is Gideon Bibles, but you can just steal one of those.
Trust me, your friends will be amazed.
(I'm sure those are tears of joy.)
You can even get a logo gift bag.