Used ThinkPad's are pretty common on Ebay.
They're what I use. Also with Debian.
"Recent" is a factor of how much you're willing to shell out.
$300.00USD will get you a good Debian compatible box. You may want to then replace the battery and/or add RAM. Those are both found inexpensively also.
And this time we'd have not just Chump but also the added benefit of BrainWorm's input to help try to kill us all.