Screwdriver 10 years in the garden
I actually experienced just that one, and can attest that they replaced it.
I once bought a bit holding screwdriver used for a couple of bucks. It had an awful smell (even worse when I opened the back cap, and some rusty putrid liquid came out that smelled like a mix of cat urine and vinegar, and was so potent you had to brace yourself to not wretch), so I put it in a zip-lock bag with some soap and left it outside my shop door (it was too nasty to even bring in the shop), and then promptly forgot about it.
Several years later, I found it in the tattered remains of the bag, while raking a pile of leaves. The handle had petrified into a crack ridden crunchy plastic that had the friability of stale bread. The cap to the handle had liquified into something that resembled a molten mini marshmallow, and the metal shaft looked like something recovered from a shipwreck, though all the smell was gone. Yet you could still sort of read "nap On" on the handle if you looked hard enough.
I sent it in with a bunch of other broken stuff (back when you still sent things in; and the other stuff was clearly legitimate warranty claims I had accumulated over the years), with a note explaining EXACTLY the story of the screwdriver, and how I completely understood if they didn't want to warranty it. I was absolutely shocked when I got a hard handled ratcheting screwdriver in the mail with my other stuff.