I'm a really big fan of the tabbed examples. I've been working on putting a few of these together in my collection over the past five years. Here are three that are current faves:
Gotta love the red!
The one-legged version of Gilly Campbell, featured on both his 1931 and 1932 Zeenut cards:
And then this one, with a coupon lacking an expiry date, featuring a player built like a Truck:
