I practice a lot and most of it is focused on jazz. Usually I'll have an etude that I'm working on and will toss about half an hour onto that, and just to continue developing the bow, I'll play heads and accompaniment to tunes with the bow as well.
EDIT: Er, yeah. Forgot about the jazz aspect of practice. For the past little while and up until March or so, my practice time is focused on a few very specific tunes because of university auditions. Right now I'm learning the head to Groovin' High for my UoT audition. Soon I'll be working on Billie's Bounce for my McGill audition, and tomorrow night I'm resuming my transcription of Ray Brown's solo from Night Train by the Oscar Peterson Trio. Also, I'll be reinforcing the etude I'll be playing for UoT, McGill, and Humber, and reinforcing Body and Soul and All The Things You Are. I do this by playing the heads, soloing, and walking over the changes, often to accompaniment found
here. Should be another few days until I'm solid enough on Groovin' High to take time off to resume learning Billie's Bounce, which is (quite thankfully) only a 12 bar head!
So to keep the classical in there, I've been playing the heads to Body and Soul and ATTYA arco quite often (which isn't classical, but involves classical technique,) as well as sections from Groovin' High (holy crap is that a killer) and will be taking home some sheets from the school's library including March to the Scaffold and some Mozart excerpts.