The decor should suit your needs and goals. In many cases, the garage is like the attic where they end up all that we never used. If this is the case today is the day you decide to give a facelift to that space.
You must be clear that all decorations must be put in terms of walls and ceilings. This why most of the central space is intended for cars that is. Shelves or racks are perfect for this purpose but you must keep in mind that the most important is the fusion is made between functionality and aesthetics.
Creative reform initiated by a good coat of paint to the entire environment. Not for being a workplace must be dirty and unkempt. Also the proper organization of tools and equipment will ensure a more comfortable space to move or labor.
This does not require more than a couple of organizers perforated wall and a table for tools. Do not forget the small but very adequate lockers for storing garden tools.
A desk should not ever miss, and you can fill the frame with a canvas on the floor before skidding to avoid accidents. Remember that the decoration of this is very different from the rest of the household by the huge number of objects that tend to accumulate in such a short space.