There are several ways to get studs by destroying chairs, trash cans, etc. There are two fan covers on the ground outside the cantina that give lots of studs. Inside the cantina there is a location that gives a lot of studs. In "Episode VI: Return Of The Jedi" there is a table in the middle of the room with blue chairs. Use The Force on these chairs several times. Some studs should appear each time this is done.