There used to be some stuff available for Abe's Exoddus, T-shirts, posters, that kind of thing. At one stage it was available to order online at the old GTGames store. It stayed online for a while, but it pretty much dissappeared after Infogrames took over. I actually wrote to Infogrames about the online store and they said they were reviewing whether it would be returned. I guess the review came up with "no" because that was a few years ago now.
The only things you can usually get at the moment are promotional kinds of things that pop up on eBay from time to time. Like Oddworld patches and the Munch can. I never did get my Munch can. I ordered a few from a guy on eBay and he said he sent them, but they never arrived.
It's known that I would like to see lots of Oddworld merchandise, but I also understand why Oddworld is not rushing. As they are careful with the companies they deal with (like SoBe for instance), and won't just let anyone have an Oddworld licence.
However, although I would like to see merchandise (action figures ... not cheezy like the ones in the other post, clothing, plush fuzzles ... yay!, etc) ... I wouldn't like it to be "everywhere" like Pokemon and Harry Potter. That would just spoil Oddworld. It should be like some other games merchandise, more specialized and just available from video game/collectible stores or online.
Abe Babe...