It might be me using the wrong term for what I have in mind, but I cannot find how and where I can have lenticular images developed.
I mean those things that display two (or more) different images depending on the angle you look at it. Often, they are also holographic/3D.
A quick Google search only revealed large printers that won't do anything below a certain quantity. And I'm in Canada, so providers which can provide service here would be most relevant.