Canister 1: Head to the left side of the open area. Build the platforms to get up, then use the second platform build to Jump to the Canister.
Canister 2 (Free Play): Remember seeing this Canister during the Cutscene where Luke is captured? You can grab it now because there is no Cutscene.
Canister 3: Jump up the ledges immediately to the right. It's sitting at the very top, in the corner.
Canister 4: When you Jump up the ledge to bring Obi Wan around, it's sitting in the upper corner.
Canister 5: When you head up the hill towards the Sandcrawler, take the split path to the right. Follow it all the way around. You'll see the Canister in the air near the pit.
Canister 6: In the corner, near the Sandcrawler, Jump to it.
Canister 7: There's a set of bricks on the ground around here. Build them into a platform, use it to Jump to the Canister.
Canister 8: Sitting on the stage, in the area where you meet Han.
Canister 9: Take a Jedi and Jump across the gap on the far right here. It's sitting at the end of this path.
Canister 10: In the Docking Bay itself, head towards the right side. There's a small area here. It's sitting in the middle.
Unlocked Character: Tusken Raider (200)