here's one that can be a picking excersise, or you can try to tastefully use parts of it as a lick.

the whole thing is plaed on the g string.
think triplets. i'll just give the fret numbers.

4 -5- 0--- 2- 4- 0--- 5- 7- 0--- 4- 5- 0--- 7- 9- 0--- 5- 7- 0--- 9- 10- 0--- 7- 9- 0--- 10- 12- 0--- 9- 10- 0
on the way back down, try something like this
12- 14- 0--- 9- 10- 0--- 10- 12- 0--- 7- 9- 0--- 9- 10- 0--- 5- 7- 0--- 7- 9- 0--- 4- 5- 0--- 5- 7- 0--- 2- 4- 0

once you get used to it, you can change it to four note gruopings. 0- 4-5-4--- 0-2-4-2--- 0- 5- 7- 5--- 0- 4- 5- 4 and so on. this is all in a minor with the pedal tone being g, the minor 7th



sorry! when i posted it, it didn't keep the spacing that i typed in.