Just looking for some advice/ideas.

I'm not a garage owner or anything, my workshop is purely for personal use, but I like to be as self-reliant as possible when it comes to tools. I've got a fair selection of bits and have finally got round to getting the two-post lift I've been meaning to get for ages and have recently bought quite a few more bits of kit and there's a few more things I've got on my wanted list which I'll pick up over the course of the next few months.

Just wondered what other bits you guys have got or think would be useful. I may have missed some bits off, but here's what I've got/intend to get shortly:

Currently got:

- All the usual hand tools, I'm not going to list everything, but got a good selection of spanners, ratchets, sockets, torx bits, screwdrivers, allen keys and all the other standard tool kit all in proper tool chests.
-Angle grinder, Heat gun, selection of electric drills and all the bits, electric screwdriver etc etc. All the obvious hand power tools in other words.
-A large compressor, more than big enough to run anything I'm ever going to use, a mobile but still fair-sized compressor and a small portable compressor
-Selection of air tools like impact wrench, spray gun, normal air line, decent tyre inflator
-Sandblaster and cabinet
-Powdercoating equipment
-Decent-sized spring compressors
-20-tonne press
-2-post lift
-Oil drainer for use with lift
-Selection of jacks and axle stands up to 3 tonne trolley jack
-40 Gallon Parts Washer
-Makita Rotary Polisher
-Nilfisk Pressure Washer
-Numatic Wet/Dry Vac
-Decent Vice
-Hydraulic Pipe Bender
-Launch X431 Diagnostic
-Small paint oven and infra-red heaters for curing larger items

Am Looking To Get:

-MIG Welder - Nothing too big or fancy, probably a Clarke, will do me for light use
-Plasma Cutter
-English Wheel
-Wheel Balancing Machine
-Automatic Tyre Changer
-4-Wheel Laser Alignment/Tracking

Any suggestions of other things I could pick up that would be of benefit or where to look for some bargains? Or just essentials that I've overlooked.