I hadn't thought of myself as a collector, but then I noticed how many different maps I have. I still have a Michelin map of Africa from the 1970s when I worked there.
Atlas Obscura is a website and set of publications about unusual places around the world. It's not surprising that their collections include unusual maps.
It's amazing how many places you can find world maps with Mercator projection... I'm waiting for the version done with tea leaves...
The cow sculpture is my photo; I've seen this cow twice now at exhibits in Chicago USA and Edinburgh Scotland.
But Mercator's just one of many map projections.
Here's another xkcd cartoon -- linked muffins, money, vehicles, appliances, news clippings, all kinds of stuff...
Cellarius rendered numerous fanciful drawings of the accepted cosmology in early 1600s, for instance these from Harmonia Macrocosmica of Andreas Cellarius
https://www.staff.science.uu.nl/~gent0113/cellarius/cellarius_plates.htm
Here is a set of the oldest maps I could find easily (6200 BC to 400 AD)
Credits: Siebold, Jim; Index of Cartographic Images illustrating maps from the Ancient Period: 6,200 B.C. to 400 A.D. -- Ancient Maps, April 1998. http://www.henry-davis.com/MAPS/AncientWebPages/AncientL.htmlhttp://phoenicia.org/imgs/maps/pages/1ancientmapscombo.htm