I have several trees (OK, one in each room on the main floor). In the dining room I have a small 2ft table top. The living room has a traditional 6 ft. Bathroom has a ceramic one like was noted above (Costco has some available in store, might also be available online). In the den I have a 6 ft pencil tree (ie skinny). Each of the trees with branches hold decorations and there is a theme.
My favourite place for getting artificial trees is Michaels. They usually have a great sale on trees right around American Thanksgiving but it you start watching for it early November you should be able to catch it.