(oYo) has some watches, a towel and a hoodie on his site:
FOR SALE: Gear and memorabilia - Kakutougi
tokyoamusement has some yellow shirt with blue logos, but only in XXL, I believe.
I'm looking for some nice saku gear, too. But I really can't see shelling out for a watch. A man only needs one watch and I ahve one.
Good luck.
EDIT: Boobs has a bunch of saku stuff on there. Go get it! None of it fits me, though.