ST makes a 256Kbit I2C eeprom in an 8DIP or 8SOIC (M24256).  Not cheap
though.  Mouser sells it for about $8:
http://www.mouser.com/detail.cfm?MPart=511-M24256

As someone else mentioned, there's also Atmel Dataflash.  Insight
sells the 4Mbit AT45D041-RC in 28SOIC for $5.34:
http://www.insight-electronics.com/cgi-bin/catalog.cgi?supplier=ATL&keywords=at4
5d041

Fredric