I recently had the idea of using some of Kreutzer's violin etudes as a way of practicing bassplaying. An etude is a composition for practicing technique. So, here's Kreutzer's Violin etude no.2
Link
For violin, this etude has different bowing variations, but for bass you could come up with different combinations of hammer-ons and pull-offs or playing 1 note staccato and the following three as legato as possible and so on.
Tell me what you think of this idea.