All Collectibles in order as they appear. The characters used are just examples. Of course, you can use whatever character you like with the according abilities ;-) :
Part A: Village Retreat
Play sports 3x.
1. Build a basketball basket and use BB8 to play it.
2. Play bowling
3. Play football / soccer. Use BB8 to get the ball.
Build 3 barrels so the villagers can hide.
Build 2 Stormtrooper targets for target practicing.
In the house next to one of the weapon crates for the main story. The minikit pieces are scattered next to the crate and needs to be put together.
Part B: Death Star Throne Room
Destroy 3 Silver Antennas with the Silver Lego ability.
Hidden behind a pile of junk. After the first shootout.
Shake out a bucket with the force.
Build a device for BB8 so he can open the hatch of the crashed space ship.
Destroy the Gold Lego box with the Gold Lego ability.
Use Ackbar at the pool, build a terminal and use it.
Use the strength handles at the hut.