Pretty good day of garage saling.
I'll start with the small stuff and work up to quite a great find.

Burger King GBC/Pokemon toy
Ice Hockey handheld
McDonald's racing handheld
$0.25 each

NCAA Football
Madden '98
Both for $0.50

Ace Combat 5
Monsters Inc. Scream Arena
007 Everything or Nothing
All CIB, for $10.

Super Scope is missing some pieces, but I think I already have the pieces.
Al for $2.

NES system with RF, AC hookups
2 controllers, 1 Zapper
SMB/DH (with manual)
SMB3
Tetris
Wall Street Kid (with manual)
Sega CD (Batman forever is inside, how do I eject this thing???)
GameGear with Nuby battery pack, Sonic 2
Sony PS1 controller
High Frequency PS1 controller
Few other random cables: Coaxial cables with switch, Stereo cables
All for $15.
And what I think is a pretty good deal. But I don't even own a 3DO so it's really worthless.

Jurassic Park Interactive (CIB)
Corpse Killer (CIB)
The Incredible Machine (CIB)
Ballz: The Director's Cut (CIB)
Olympic Summer Games (CIB)
Waialae Country Club (CIB)
IceBreaker (CIB)
Gridders (CIB)
Guardian War (CIB)
Gex (CIB)
Star Fighter (no manual)
Po'ed (no manual)
PaTaank (no manual)
Burning Soldier (no manual)
Way Of the Warrior (loose)
Out of this World (loose)
Battle Chess (loose)
WCW/NWO Thunder (PS1, loose)
Batman Forver Tiger handheld
The Fishing Hole Game handheld
iGame Football handheld
N64 Transfer Pak
All for the incredible price of $10.