Even if a team isn't listed for a sport I am still possibly willing to trade for one. This is just the list of known ones I am still missing.
Bluefield Blue Jays
New York Knicks
All NBADL teams
Will take any business card with a schedule for a sports team on the back. Sport and level doesn't matter
Other Business Cards
KOA (Kampgrounds of America)
water slide parks & amusement parks