Kidlandia is an interactive map builder that allows you to create custom fantasy maps for children; you choose from one of four maps (which seems rather limited to me), which you customize with your own place names. Prices for giclée posters range from $40 to $180, but it’s free to use online. Via Cartophilia.

Allison M. Whittington covers cartography and maps in her blog, The Explorer’s Notebook; prominently featured is her own artwork, which includes maps of imaginary lands and treasure maps and which she sells via Etsy.

Jonathan Roberts is a freelance cartographer who creates maps for roleplaying games as well as private commissions; here’s a gallery of his work.