I have a 3 car garage, 1-2 car bay, 1 single bay. I made some simple saddle brackets that hang on the outside of the garage door track (V shaped with the top of the V having a cleat that stabilizes the bracket against the top of the track, stove bolts hold the brackets to the track without interfering with the door). Through the bottom of the brackets are drilled holes to hold 3/4″ EMT metal conduit. This is available in 10 ft lengths which is enough to span the single bay track width. I used cotter pins to hold the conduit in the brackets. Eye bolts that slide over the conduit can then be mounted to a 2 bulb flourescent light fixture and bingo, you have lighting that works with the garage door up or down. I did this for my single bay which is where I have my tablesaw and bench/outfeed table. I centered the light at the tablesaw/outfeed table juncture and it makes for awesome lighting for both surfaces.
To make sure you account for any existing obstructions, it’s a good idea to make a measured drawing of your workshop area on graph paper, noting existing furniture, built-ins and large items on the plan as you go. For example, a common one-car garage workshop layout has built-in tool cabinets and shelves around the perimeter where they won’t impede parking, but you may also have to get clever about folding work tables and saw horses that you can set up as needed in the middle of the garage when you’re working on a project (and cars are parked outside).
Once you’ve planned the basic layout of your workshop and have added all the tools and speciality appliances you need, take a last look at the overall design to make it aesthetically pleasing. Add overhead lighting for general illumination and task lighting over your work stations so you can see your project clearly. For maximum flexibility, you can mount clip-on work lights to nearby shelves and point them where you need them, knowing you’ll be able to move them about as required for different projects.
Some of the most important decisions in laying out a shop involve the placement of basic machines, such as the table saw and jointer. Deciding where to put them depends in part on the scale of woodworking you do, which determines the clearance area around these machines if you need to handle long stock or large sheet goods. You’ll also want to consider work flow to avoid an excess amount of running around the shop to accomplish tasks, as well as how to power your machines without turning your shop into a snakepit of extension cords.