In early manifestations of the KMFDM web site, Schulz maintained a section called "Günter's Guitar Garage." Among other things, he used the space to encourage amateur guitarists to learn formal notation as opposed to tablature.
After KMFDM disbanded in 1999, Schulz and Esch recorded a few songs for tribute albums and then formed Slick Idiot, a band featuring Schulz's trademark guitar and Esch's vocal stylings. The band has, as of 2010, released three studio albums and two remix albums. KMFDM reformed in 2001, though Schulz and Esch rejected Konietzko's offer to return to the fold.
Schulz is interested in photography and took many of the band portraits that appear in KMFDM and Slick Idiot liner notes. Concert attendees also observed Schulz taking pictures of the crowd during KMFDM's Symbols tour (1997). These photos became the material for the video "In Your Face".
Guenter also travelled to Ghana as part of the crew for "So Good, So Far: the Way Forward". He took photographs for the film and documented the trip through his photographic prowess.
In 2005, Schulz announced the formation of a self-titled solo project, Schulz. He was part of PIG's touring line-up in the summer of 2006, thus reuniting with fellow KMFDM alum Raymond Watts.