Of course, you are going to start with my items.
Then you can add this great bus-meets-grasshopper-head-on vintage card from Etsy seller, PostsfromthePast. Wish they had a better photo, but it's very kitchy in a good way.
Or, kickoff your collection with this vintage Greyhound Bus ad from Etsy seller, thebabykitties
Or go the serious route with this copy of a vintage Farm security Administration photo from Etsy seller, HistoryPrintShop.
Now that I've done the driving for you, see how easy it is to start a collection?