Every shop I've been to has some sort of combination of these. And every shop has been different. Mine and your shops will be no exception. Well, first of all, in order to even use air tools, you need an air compressor. What kind is dependent on your needs. If you're going to be painting cars with an HVLP gun, you're not going to want to cut corners on your compressor. As the name suggests, they use a high volume of air. So you would need to get a compressor with either a huge tank (or tanks - add on more tanks to increase the amount of air storage) or a powerful compressor capable of keeping up. I don't have the kind of space or the kind of budget to get a huge powerful compressor. In fact, I went with a 3 gallon pancake from Harbor Freight for $40 with coupon. But it was leaky right out of the box so I decided I'd exchange it the next day, as they were already closed for the day. I ended up finding a Porter Cable 6 gallon pancake for $40 on Offerup because the regulator was leaking. I decided to take a chance and was able to fix it with just the things I already had laying around. When you buy a compressor, the best thing to buy first is a kit with a hose, air spray gun, inflator, and quick detach fittings. Also grab some whit thread tape, maybe blue Locktite or thread sealant as well. Once you start acquiring air tools, you'll get a better idea as to what accessories you need. But my additions were an adjustable regulator/air filter combo attached to an oil fogger with quick coupling fittings on each end so I can insert it in the air line or remove it with no problem. Though I'm still debating on a hose (primarily if I want one on a reel or not. They seem quite convenient. But disproportionally expensive), though I do know I'll be getting at least a 50' hose with 3/8" ID made of a durable rubber or hybrid. I started searching for a HVLP gun that I could use with my compressor and discovered LVLP guns. They sounded like the perfect solution, so I picked up a SPRAYIT set with 2 guns (0.8 and 1.3mm), adjustable regulator and 2 other size needle/nozzle/cap kits (1.7 and 2.0mm) for $80. Seemed like a steal to me. As for powertools, from everybody I know that use them daily for work (cordless), the general consensus was that Makita and Milwaukee were the way to go. I ended up getting the Milwaukee ONE-KEY M18 Hammerdrill/Impact set because it allows me to track my tools locations and even lock them out so they become paperweights. Which I liked so that I don't need to worry about losing them (with someone else's assistance). But using the same app, I can fine tune the torque and RPMs as well. It's proven to be extremely useful. Sanding/buffing/polishing any surface, even delicate ones, is no problem at all and comes out fantastic. The pair of 5Ah batteries last quite a long time too. It's an expensive set that I expected to instantly regret. But nothing could be further from the truth. It's saved me so much time in just the one year since I purchased it that even at minimum wage, I've saved more time than the kit cost. For the drill, I picked up a 115 piece M35 Cobalt drill set for just shy of $80 after coupon. And for the impact, a 100 piece security bit set for like $8 after coupon. The cobalt bits are like $3-400 elsewhere, and the security bits are like a master key for taking anything apart. The next most common powertool that you'll see in a shop is an angle grinder. The one I'm lusting over is a Metabo corded 5"angle grinder for about $200. But haven't been able to afford that yet so I've been using the dirt cheap $9.99 DrillMaster one from Harbor Freight for now. I'm on my 3rd one now. I hope to be able to pick up the Metabo sooner rather than later. But an angle grinder does so much. Cutoff disks go through steel or brick/concrete, grinding disks obviously grind surfaces down, sanding disks and wire wheels clean surfaces very well. Another versatile tool is a rotary tool. I suggest any Dremel or knockoff that fits the Dremel Workstation. It gives you the ability to do about anything. The only downside is it can only be on a very small scale. But indispensable for drilling your own PCBs and similar detail work.