I take a bunch of tools and whatnot to the range every time. It all used to go in my range bag along with the guns, and I would carry ammo in an ammo can. But back in March I bought a soft-sided tool bag bucket thing from Lowe's to keep my non-gun stuff in that I carry to the range. The bucket part holds a LOT of ammo. I put 100 rounds each of 9mm, .357, .44mag, and .45ACP, and 300 rounds of 22LR in it one weekend. 400 total rounds of centerfire plus 300 rimfire.
The rest of the pockets and sleeves contains my squib rods, hammer, allen wrench pouch, screwdriver, earplugs, stapler/staples, binoculars, shoot-n-see dots, can of CLP, bottle of oil, punches, bushing wrenches, cleaning rods/brushes/patches, etc. This bag was the best $20 I ever spent.
I also have a tackle box at home with more cleaning rods and brushes and patches and better set of screwdrivers and lots of miscellaneous little parts and stuff. So I guess I have a "shop set" and a "field set" of tools. But both sets maybe add up to $100 or so so it is not a big overlap. I don't have a bunch of nice wrenches or sockets or anything that really drives the cost up.
One nice thing about having tools (at least for me) is that I can lend them to folks and strike up conversations with them. Someone else invariably seems to need a plastic mallet or a squib rod or a screwdriver or something. So I'm glad to have it. One time this guy set up next to me with about 4 or 5 suppressors. He seemed a little stand-offish and I wondered if he ever got annoyed with folks asking about his nice expensive ultra-cool toys. So I made it a point not to and kept to myself (drool, drool). But then I saw him squinting at his targets (15 yards) so I said "hey" and handed him a pair of binoculars. That sort of broke the ice and we had some neat conversation. He really did have some cool stuff.
-cls