He has played in two jazz-influenced side projects: Tone Dogs in the early 1990s, and Harrybu McCage, which formed in 2008. He recorded with the Tone Dogs for their debut album "Ankety Low Day", which was released in 1990. Cameron also has a fondness for psychedelic garage rock, and his side projects Hater and Wellwater Conspiracy reflect this. Cameron formed Hater in 1993 with Soundgarden bassist Ben Shepherd. The band released a self-titled album in 1993 and recorded a second album in 1995 following Soundgarden's "Superunknown" tour. The band's second album, "The 2nd", would not see release until 2005. Cameron founded Wellwater Conspiracy with Shepherd and guitarist John McBain. The band's debut album, "Declaration of Conformity", was released in 1997. Following Shepherd's departure from the band in 1998, Cameron took over lead vocal duties for the band. Cameron and McBain maintained the group after Cameron joined Pearl Jam, and a further three Wellwater Conspiracy albums were released following the band's debut album ("" (1999), "The Scroll and Its Combinations" (2001), and "Wellwater Conspiracy" (2003)).