Front end alignment at home

I use one of these SPC Performance FasTrax Camber Caster Gauges 91000 and a set of these Longacre Toe-In Plates 79501. You can get around using toe plates, but since I'm usually working by myself they make things easier.

I do have a set of turntables and slip plates for the rear (also keeps the car level with the turntables under the front wheels), but they're not absolutely necessary. If you have a nice smooth garage floor you can just use a bunch of dish soap under the tires. Alternatively, you can use plain steel or aluminum plates and put bearing grease between them so the top plate turns on the bottom. I've also seen teflon pads used with soap or grease. I picked up my turntables used from eBay, they weren't that expensive. Just have to keep your eye out for a good deal.

It takes some practice to get repeatable results but once you've got your system down it's not that hard at all. If I had to pay for a custom alignment every time I changed my suspension on one of my cars I'd go broke, buying the alignment stuff has already paid for itself. Not to mention I don't have to schedule an appointment, figure out how to drop my car off or sit around for a few hours to get it done.