Thinking about getting some packing cubes or stuff sacks to put in the Brain Bag's compartments (yes, I'm aware that the Packing Cube Backpack, in Backpack mode, fits perfectly in one compartment -- but it seems to me that dividing 1 into 1 may not be that useful).

The inside dimensions of the Brain Bag's compartments are about 3.5 inches deep by about 17.5 inches tall by about 13.5, maybe 14 inches wide. Because the compartments are squishy you can push the depth to as much as, perhaps, 4.5 or 5 inches, or squish it down. Plus you might have a Brain Cell in there. So I was looking for combinations of cubes and sacks which would fit well within the compartment at various depths. I made the following diagrams showing various combinations. Thought it might be helpful to others here. The numbers shown is the thickness (or total thickness in the case of 2x) of an item. Some items are small enough to be rotateable; I've noted this. Based on their diameters, the yarn stuff sacks are assumed to be (small: 4.5 x 5 x 3.5) (medium: 6 x 6.3 x 3.5) (large: 11 x 6.3 x 3.6) and are NOT the ones with clear bottoms.

The inside dimensions of the Brain Bag's compartments are about 3.5 inches deep by about 17.5 inches tall by about 13.5, maybe 14 inches wide. Because the compartments are squishy you can push the depth to as much as, perhaps, 4.5 or 5 inches, or squish it down. Plus you might have a Brain Cell in there. So I was looking for combinations of cubes and sacks which would fit well within the compartment at various depths. I made the following diagrams showing various combinations. Thought it might be helpful to others here. The numbers shown is the thickness (or total thickness in the case of 2x) of an item. Some items are small enough to be rotateable; I've noted this. Based on their diameters, the yarn stuff sacks are assumed to be (small: 4.5 x 5 x 3.5) (medium: 6 x 6.3 x 3.5) (large: 11 x 6.3 x 3.6) and are NOT the ones with clear bottoms.

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