Blinkies and Glow products KHL has 25 pieces of blinkies for $12. Very good selection. Most products sold by the dozen. Various lighted and glow toys.
New Drago Toy has fun glow and blinkie products, also cheap glow mecklaces and bracelets. Sold by the dozen, but you can ask for 1/2 dozen lots.
Other shops carry various blinkies and glow toys including fun blinking and non-blinking rings, which were a hit at BM '06.