273. Book of Many Errors
274. Deck of Cards (you throw down a card, and hey presto, there's a card)
275. Operating system of many failures (also known as windows 98)
276. Lazy Rifle.
277. Daern's Instant Brothel
278. Drums of Picnic
279. Eyes of Metrification
280. Manual of Bodily Odor.
281. Hanging Picture of Crookedness
282. Toilet roll of running out.
283. Keen writing paper +4
284. Flamethrower of hair drying
There are actually some items which would do nicely as cursed items (with a lot of laugh to share the first time a character tries to "guess" what the item are able to do by trial and error system.
287: Wand of summon mobster I (brings in 1d3 goombahs with useless guns who proceed to eat all your food and lounge about playing cards. Not for D20 Modern campaigns.)
288: Ring of the Lamb
289: Bohemian Ear Spork
290: Circlet of Unwanted Star Trek Trivia
291: Gauntlets of Hangnail
(I have to admit that the Decanter of Endless Socks sounds pretty good. When you're out hiking, you can ALWAYS use a pair of dry socks.)