There exist a lot of custom made Blood Bowl / Fantasy Football dice right now. Mostly you will get them a larger Blood Bowl Tournaments. But some are sold at Blood Bowl Onlineshops, too.
A nice souvenier are those special D6 dice, which are give-aways at Blood Bowl tournaments. Sometimes it is possible to get a whole set of custom made dice, which includes Blockdice, D6 dice and sometimes a D8 dice, too.
If someone got dice which dont show up here, please send me a pict ( … or the dice :-) ) and some information about it. Thx!