Start collecting big pieces of cardboard and you can template anything and everything. Not sure what your wood working skills are but it's pretty easy stuff and even the slightest hint of warm wood finishes inside there make a huge boost to the "hominess". "Homeyness"? You know what I mean.
We built a new table, an overhead shelf that mounts above the galley, a new 'faceplate' for that area above the galley where everyone puts their radios, clocks etc and the super handy stairway table I found on here. Next time I'm at the boat I'll snap some pictures. I just used 3/4 pl, stained and then tung oil to a super rich gloss.