How to make 'pickup' objects not collide with each other?

I’m making a card game and am wondering how to handle stacked objects that can be picked up. Their layer needs to be set to pickup or PickupNoEnvironment, but the physics matrix has these layers as colliding with eachother. I can’t modify the matrix as the sdk won’t let me. Does anyone have any ideas?

Set collider as trigger (as far as i know it what everyone does).

I was able to figure it out by just creating a new layer, apparently you can still pick up objects even if their layer isn’t set to pickup.

Setting the collider to trigger wouldn’t work, since the cards need to have gravity and they need to be able to collide with the table/floor