...though I suppose if you're in an area that was settled later, folks might also tend to focus on the available historical objects to find.
I think, for me at least, it's the sense of history and imagining how that object got to be there--taking me back in time--which is much like digging an old coin or a button. I think I got as much excitement digging the few old bullets I've found as the old coins or one button I've found so far, though they've all been scarce for me so far.
One of the first exciting finds for me--when I was still using the Tesoro Sidewinder--was a .50 cal musketball I found in the the soft, sand bank of what had been the Middlesex Canal. It wasn't noticably deformed but, considering the location and the soft ground I found it in, I still imagined someone on one of the many flat canal boats plying the waters between Charlestown and Lowell from the late 1700s up til about 1850--or maybe someone leading a horse on the opposite bank--trying to shoot some dinner and missing, burying the ball in the bank of the shore and wondering if they went hungry that night. That's part of the pleasure of the hunt for me as well, imagining what the location was like at any given particular time in the past, even before I even start digging.
For instance, here's the non-coin objects--minus one CW-era, I think, officers button--I've found in one very large historical location:
[attachment 80565 080210_A-non-coin-finds_7819.JPG]
The interesting coins I've found there are a 18x7 half-cent and a 17x7 half-reale. While the half-reale was probably the find I've been most excited about yet, the clay pipe, two large bullets, and staff button were roughly equal in excitement to me as the half-cent (the only one I've found yet).
(BTW, if anyone can help ID the unknown stuff, that would be really cool!)