Required Characters: Blaster, Bounty Hunter, High Jump, Lando
Canister 1: Head to the right side on this first area. There's a Canister sitting in a small alcove above. Technically you need to use Boba's High Jump to reach it, but Luke can make it just fine by using the light just to the right.
Canister 2 (Bounty Hunter): Inside the first room, there's a Bounty Hunter Panel on the right. Use it to find a Canister inside the small room.
Canister 3 (Lando): Head right as soon as you arrive. Use the Bespin Panel to lower the Force Field, finding a Slave Girl and a Canister.
Canister 4: Sitting in the air in the very first room you come across.
Canister 5 (Blaster): On the way to the room where the consoles are, there is a Grapple Point, use it to reach a new area. In here you'll need to utilise the Grapple Points and the Buttons on platforms above to deactivate the lasers and reach the Canister on the other side.
Canister 6: In the room with the three consoles, there's a Force Field on the right, with a code beside it. Input the code into the consoles to deactivate it and get a Canister.
Canister 7: On a platform in the distance on the way to the Carbonite Chamber. Hover over to grab it.
Canister 8 (High Jump): There's some platforms in the air around the sides on the Carbonite Chamber, it's sitting on the right side, use Boba to get to it.
Canister 9: At the second intersection in the duct system, head right instead. You'll find the Canister at the end in the air.
Canister 10: Get out into the main balcony area. You'll see some platforms on the left side leading to another platform at the back. Platform across to get the final Canister.
Minikit Character: Obi-Wan Force