The French Knoppix site, http://knoppixfr.tuxfamily.org/, has translated their hardware database into english: http://knoppixfr.tuxfamily.org/index.php?page=hardware There are not a lot of listings yet, and the site surely doesn't reflect the large amount of hardware that works under knoppix, but hopefully it will grow.
Impulse Firecracker 24 Rev 2.1 2MB 24bit Graphics card for Amiga 2000 3000 4000
$175.00
Mini External OLED AMIGA Gotek Floppy Drive Emulator For Amiga 500/500+/600/1200
$37.41
SIDKick Pico Commodore 64 and 128 (C64 / C128) - MOS SID 6581 / 8580 Replacement
$19.99
Commodore Amiga 1080 Color Monitor Read Description
$150.00
Amiga 500 Gotek Custom Mount USB Floppy Emulator - Complete Kit with Gotek
$65.00
Commodore Amiga 1200 Recapped NTSC 68060 FPU MMU Indivision AGA Mk3 HDMI 128MB
$1449.99
Commodore Amiga 1200 A1200 PAL Motherboard Recapped Works 1D4 US Seller Refurb
$399.99
Commodore Amiga KKQ-E94YC Keyboard for A2000 / A2500
$249.00
TeensyROM Cartridge for Commodore 64/128: MIDI, Fastload, Emulation, and Network
$65.00
Amiga Gotek V3.42 External Ivory & BIEGE + 0.96 OLED + Rotary with DF1/ 23p Lead
$88.98