personalized architect stamp or embosser. It would be nice to put her "seal" on her work.

How about a nice pencil/tool carrying case? Something like this or if she has more, I know in art school we used toolboxes/tackle boxes/train cases as organizers and they work great. If she REALLY has a lot to transport, look into rolling art cases. Another idea is a tube carrier like this. You could fill it with the stamp, some nice fountain pens, etc.