True Jedi Story - 11 000. Not an overwhelming amount, should be no problem. Just try not to die too much.
True Jedi Freeplay - 16 000. It's even easier than the Story Mode.
Power Brick. Just behind your X-Wing at the beginning.
Use the detonator to blow up the grid at the right side of the first room (you can reach it as R2).
Use the bounty hunter access door just after the stationary gun room.
In the first Vader fight area, use the Dark Side on the control lever to the left, and then use the crane to throw one of the stormtroopers into the freezing chamber.
Shoot the wall shown on the screenshot, and use the step to reach another minikit.
At the end of the same section as #4, use R2 to reach the next one.
In the second Vader fight area, there's a tunnel that can be used by a small character. The minikit is on the other side.
Hit the corner of the platform you're standing on when fighting Vader for the third time.
At the beginning of the last section.
A little bit further from #8, jump towards the screen to get it.
Use the bounty hunter door at the end of the level.