Other than stuff that is still relatively new today (iPad, iPad 3, mac mini, usb and bluetooth keyboards, ipods and iphones) I had the packaging and kit for an Apple Adjustable Keyboard, plus one of those circular microphones, although my box for the circular mic was white, and I had the line audio adapter as well.
After that -- it's just software. I have AppleWorks 5 and 6, Mac OS 7.6, 9.0, 10.3, 10.5, At Ease 1.0, and more recently I picked up copies of Mac OS X Server 10.5.4 and Final Cut Studio 2.
I think I have one or two Claris things in their packages, or at least internal boxes, and I've got some other period-appropriate Mac software in boxes, such as PageMaker and FreeHand, and Word5/Excel4/PowerPoint3.