$60 512 MB PC2100 DDR from a G4 iBook (also works in some Powerbooks)
$40 256 MB PC2100 DDR from a G4 iBook (also works in some Powerbooks)
$50 512 MB PC133 SDRAM from a G4 Cube (also works in G4 PowerMacs to 1 GHz (except the original Yikes!), G3 iMacs above 350 MHz, and eMacs to 1 GHz
$35 256 MB PC3200 DDR from a G5 iMac (OEM Hynix brand, double your stock memory and be sure of matched RAM for maximum performance)
$20 Apple Pro Optical Mouse
and not a Mac item, but you may have a Dell LCD for your Mac:
$25 Dell AS500 Sound Bar Speakers for UltraSharp 1703FP, 1801FP, 1901FP or 2001FP flat panel display (these clip on to the display and get power from the display)
(http://www3.sympatico.ca/geastman/as500.JPG)
Located in Stittsville, email or phone Gord at 831-1441