Perhaps you could make your own with someone who knows a little photoshop or whatever other program. Then get them printed off and laminated (that's a good thing where manure is around ). It would be really neat if you had some nice pictures of your own youth doing stuff to make the posters out of.
the greatest known collection of motivational sayings for show cattle youth is in warner, ok. during his be a champ camps, coach has posters hanging all around the barn. surely this board has some disciples of mcpeak lurking who can remember and are willing to share some of those tidbits.