Here is my own "Travel Wall".  a series of
8x8 black and white images on
foamcore mounts.  

Very simple and clean looking, I think
Here is my "Dafodil" image, on foamcore mount, cheering up
a section of our library wall.
The back of a typical foamcore mounting.  
There are two little "stand-off" blocks at the
bottom.  Far enough away from the edges so
as to not be seen, ....and another, larger
"stand-off" at the top that doubles as a nail
hook.

These are very easy to hang, just be precise
with nail placement.  The nail hook is precisly
in the center of the mount, so the picture will
hang straight.  These are not heavy, so won't
self-center, but it's easy to position them right.

Please remember, everything about me is
"hand-crafted".  Please don't expect
machine-made looks to this stuff.  The edges
Please remember, everything about me is
are clean and straight, that's all you can see
anyway.

Large prints will be mounted on archival
Gator board, a stiffer, more stable material
(but more expensive)
Stand-off blocks
Stand-off block with
nail hook