Nice outlines; I'd like 'em even better colored, but they're cool as-is. One thing I can think of right off the bat though even before the subject of implementing tilesets comes up (which AFAIK isn't supported yet): either the tiles would have to get a lot bigger to support these graphics (meaning far less monitor real estate to show the area) or the graphics would have to be shrunk to fit the size of the other tiles. Your medkit would probably survive relatively well after said shrinkage, but the more detailed stuff would end up looking somewhat messed up/ugly. My advice would be to take a look at some of the (relatively) more developed roguelikes out there with graphical tilesets, not so much for inspiration (I know at least NetHack's default graphic set has been described as 'ugly'), but to get an idea of the space in a single tile you'll have to work with.
>_> I'll not claim to have the best advice, though, hopefully someone else can provide a more targeted/more informative/better version..