It's a lucky roomate you have, logaugh
Random ideas, depending on what he/you love(s)...
... for drawing :
- A good set of fineliners of various size (Copic Multiliners, Micron pen...),
- A set of good quality charcoal pencils,
- A set of quills and/or good quality inks,
- A quill, a bottle of "
Blue Ghost" Noodler's ink and an ultraviolet lamp to add secret details on the map (can be super fun for RPG),
... for adding colors :
- A small set of good quality watercolors (extra fine or at least fine, and you don't need a wide range of colors for start),
- A small set of Copic markers with colors he loves : greens and blues, or grey or sepia tones...,
- A set of good quality colored pencils,
... reference books :
... prints of inspiring maps from universes or artist he loves :
PS : Don't know who you are, guy who implemented the "restore saved message" feature on the website, but I love you ! ^^