I have a control exercise I could send you. I don't have it right now and it sounds so corny, but it's great. Here are some ideas:

E--12^9^5-----------------------
A----------------12^9^5---------
D---------12^9^5----------------
G-----------------------12^9^5--

E--12^5^8--12^8^5--12^5^8--12^8^5--
You can bounce around with different shapes using different timings

E--0^3^5^6^12^6^5^3^0--
Tap the twelve and play the rest legato


EDIT: Stupid revival... There's some stuff for reference anyhow