The one thing that you wonder why you didn't buy sooner?

[TreePointer]

Portable battery powered inflator. Mine happens to be a "DEWALT 20V MAX* Corded/Cordless Air Inflator," and there are other good models available.

It gives you instant air when you need it for smaller projects or a quick top off (no need to wait for an air compressor to fill). It also smokes those 12V car lighter models for remote fills.

 

[Tetryegras]

I agree. If something comes loose with WD-40 it wasn't stuck to begin with.
But try a 50/50 mix of ATF and acetone. That actually works.

I came across a product called Free All a few years ago. It works similarly to acetone + ATF, but having used both, I'd say the Free All has more lubricity. It's not as expensive as it used to be, and is a lot more available than it used to be as well. Free All has helped me remove bolts that just about nothing else would. I worked at a lawn mower shop for a couple years and introduced them to it, and now they can't get along without it and wonder what they did before they had it

 

[Tetryegras]

Also my Milwaukee power tools. Specifically the 3/8 stubby M12 impact wrench, and the 1/2 high torque M18. I have a few other tools, but those ones, especially the M12 3/8 are my go-to power tools

 

[dvan1966]

Bought a Kobata with FEL 18 years ago just for the FEL. Never used the mower deck, finally sold it after it sat around for 15 years. Also using the 3pt with a ball to move trailers around, not having to get off the tractor to grab the trailer.
Also, all my battery powered tools.

 

[Little Red Tractor]

I may be last guy in the world to have jumped on the locking grease gun fitting. I suffered for a number of years having to put new jerk fittings on something every year or take pins out of fittings to get grease on them.
Whattadifference!

 

[Todd727]

What tools (cheap or expensive) have you purchased and thought why didn't I buy that years ago? For me two come to mind: I went years without a toolbox on my truck. I don't know why but after I bought one I couldn't believe I made it without a toolbox. And a farm jack; the jacks have so many uses.

Excavator: Yanmar SV100. Did buy a Vio80, but needed just a little more hydraulic power.

 

[Goatfarmer98]

What tools (cheap or expensive) have you purchased and thought why didn't I buy that years ago? For me two come to mind: I went years without a toolbox on my truck. I don't know why but after I bought one I couldn't believe I made it without a toolbox. And a farm jack; the jacks have so many uses.

dump trailer

 

[Hay Dude]

Ram/Cummins

Just a fantastic truck. Not a speed demon, but pulls like you wouldn’t believe.
I’d give it a 9 out of 10. Just get one.

 

[philtymps]

What tools (cheap or expensive) have you purchased and thought why didn't I buy that years ago? For me two come to mind: I went years without a toolbox on my truck. I don't know why but after I bought one I couldn't believe I made it without a toolbox. And a farm jack; the jacks have so many uses.

My Bottomless Bucket is the one implement I use every week. Instead of driving my lawn clippings all the way down to my compost pile, I dump them into my BOTTOMLESS BUCKET, and it holds all the clippings in one load that I drive down and dump once. Saves me 45 minutes a week. I also use it for mulching because I can put a full yard in it and drive it to the garden beds we’re mulching. Works so much better than my old trailer. We also use it for cleanups, collecting construction debris, manure disposal, and moving all lighter weight materials around the property.

 

[pmsmechanic]

I have two different creepers. I changed the oil in my truck today and use this pad more than the creepers by far, mainly because it’s lower to the ground. I also sit on it a lot as its padded, such as when doing brakes.
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I use recycled pieces of carpet to do the same thing. I have a piece rolled up in most of my buildings and in my work truck. They keep small pieces from getting lost in the grass/dirt when working on outdoor projects. They keep me from getting dirty when working on the ground. All sorts of good uses.