Amazon has the Memorex SingStand 2 Home Karaoke System for $17 with free shipping on $35+. Retail price: $80. Features dual microphone jacks, enhanced voice controls, amplified speaker at the base.
Has good Amazon Reviews.
eBay has the Alesis Burst Electronic Drum Burst Set (Black) for
$225 with free shipping. List price: $300. Features 10 ready-to-play drum kits with drum and cymbal sounds, a throne, 40 play-along tracks.