All the freaking time lol.
Although it never hurts to own more than one of the same tools. I have like 5+ measuring tapes, hammers, 10+ different screwdriver sets etc so I always have one nearby if need it. Some tools just seem to get lost more than others.
I have measuring tapes everywhere.
I have an upstairs, downstairs, garage, and even the downstairs has its situations (kitchen, workroom, front). Just one hammer or screwdriver means a lot of movement that having several eliminates.
Now, I bought a couple hammers a few days ago because I'm like 99% sure someone noticed one I had outside because I was doing a project out there, visible from the sidewalk. I've lost a several things that way. I hate having to worry that someone will steal my stuff. It adds a dimension to my wondering where something is. Almost all the time nobody stole it, I just couldn't find it for the time being. That hammer was a favorite too. Somebody walked off with a hoe that I made out of a file, a stick, a piece of rod and a piece of plate steel and some bolts. It had the virtue of holding an edge, that's why I went to the trouble of making it. Dang the creep who stole it from my yard. A quality hoe is hard to find. I have around 4 and none of them is great.