I grabbed a couple of decommissioned grenades to fill out the frag pouches on my vest. They have good weight and help balance out my RBSS, and add a nice touch of realism. Flashy guns are cool, but it's the small things like this that really pull everything together.
I also got 4 more Magpul PTS P-Mags, for a total of 5 now. These are by far the best midcaps I've used, but they don't come cheap.
Picked up a KWA KP8 compact the other day for a steal at $20. I've never been a USP fan, but for the price, I couldn't say no. The more I play with this thing, though. The more I like it. Came with three mags. Two of them leak, so I've got to get to work on that, but more importantly, I started to make it look good. Threw a coat of flat black on the slide to cover the orange tip, hit the slide with some scotch brite for some artificial wear, and then polished up the chamber and barrel.