I found the site
www.stickeryou.com and they have a custom sticker page option. The vinyl isnt super thick so i think players might be able to run over it. might be an option to do some small custom work for field decals, or to make some MCFA stickers to hand out to kids etc at events.
I got some to add some details to display helmets that I bought.
they seem to go fast and loose with licensing on their custom stickers (i would bet you could upload any logo pic and they would make them for you)