I also picked up an 8-foot-long 2X4 that had a couple of heavy metal lag bolts and washers on it. The lag bolts were both badly bent and I did not expect to salvage those. I managed to fit that 8 footer 2X4 into the old Ford Explorer and took it home.

I took it apart today and here is what one of the lag bolts looked like when I took it out...
Those lag bolts are about $1.00 each at the fleet store. This one was bent beyond using - or, was it? The other lag bolt was also bent, but not as bad.
Back in January of this year, I purchased myself a new
6-1/2 Vevor bench vise...
I have told you that I really like that bench vise. I got it on sale for $69.00 at that time, so it has gone up in price since then. Still, it's a much better deal than any similar sized bench vises locally which are all well over $100.00.
Just for fun, I decided to put that bent lag bolt into the vise and crank down on it to see if I could straighten it out at all. Here is what I got...
The top lag bolt is the one that was really bent out of shape. After clamping and pressing it down in the vise, you can see that it really did a decent job of straightening it out.
I put them back into a piece of wood and discovered that both bolts are now useable. The bottom lag bolt went in and out almost like new, the top lag bolt that was previously really bent, has a slight wobble but it is good enough for many projects.
Those washers are really heavy duty. They are about 2 inches round and probably 1/4-inch thick. I have no idea what I will ever use them for, but I am saving them in just in case I need them. I bet those are pretty expensive to buy in the specialty bins at the Fleet store.

Anyways, I was able to salvage some badly bent lag bolts using my bench vise to press them back into shape and thought I would mention my good luck on that project.