i'll share what i know from experience on licensing
two major criteria
if you use a pre-licensed product, you can't use the product in a 'not intended' usage. buy a licensed photo ; it's intended to be framed. Buy a calendar , that page wasn't intended to be framed.Patches and decals? my 100% to be avoided advice is probably okay. Cut a Mini-helmet in half? Probably okay. Buy a notepad with logos printed on to be used as logo inside mat? Probably. Easy solution: if you have to rationalize if it's 'intended' or not, it probably isn't
doing stuff in your own store, one at a time, for a client probably puts you waaaay below the radar screen. put it on the internet and expect a letter the following morning
if you wish to get licensing approval, break out the checkbook. it pretty much requires a licensing attorney
other than those slight obstacles, i say 'go for it'
That's just my personal experience
We used to do a fair amount of framing for local pro sports teams and would get 'one time exemption' for their projects. I heard the three most vigorously protected licenses were Coca-Cola, Harley Davidson and NFL
These people are not to be trifled with