Heres my official list so far of what i've received, all of these i just found an email addy usually under "contact us" on there webpage and asked them for some promo stickers for the truck and trailer, or toolbox, etc, almost all of these are snowmobile related, but stickers are still stickers haha
NGK Spark Plugs - 7 or 8 good sized stickers
Maxxis Tires - About 10 stickers, all different sizes
Wiseco Pistons - probably 10-15 stickers, most of them pretty small
Amsoil - 4 stickers
Fox Racing Shox - 7 stickers, pretty nice ones too
Ryde Fx Performance Shocks - 3 or 4 stickers and a couple pamphlets
K&N - two packages of about 5 stickers
Hauck Performance - 4 stickers and a catalog
HMK Snowmobiling - 4 stickers and a catalog
Sporttech - 4 stickers and a catalog
Stud Boy Traction - 5 stickers, including one big one
theres a few sites that tell you to send a Self addressed stamped envelope, Monster energy drinks, Mototassarini (Vforce Reeds) , Smith Optics, a few others
you can probably just look up all of hte above companies on yahoo and find there websites, let me know if you guys have any luck with any bike products