Collect dust generally.
Got a netbook though with Ubuntu on it. Mainly because it has an SD slot and I trust Linux more when writing images to SD cards for Raspberry Pi than some of the tools on Windows (as in trusting dd not to wipe my main drive, as has been reported with the recommended Windows tool for Raspberry Pi SD flashing). In fact the SD slot built into my Windows desktop seems temperamental when trying to read the cards just using Windows itself, but the netbook and Ubuntu has no problems.
Only problem is the display is knackered on it, so I’ve got it set to boot into Ubuntu and I remote access it.
I was using an old 486 laptop for a while as a console via serial cable for a server 😀 DOS disc and boot into Kermit. Retired that when I got my NAS.