Stackable tool- and/or screw box. Use the side-latches to secure the lid or to interconnect 2-n boxes. The TPU buffer in the base part is used to align the boxes while stacking and also for a better haptical feeling. My idea is, to sort all things and have a chance to take it with me. No matter how much and how different it is. Bring order to your life
 

Following additional parts are used (if you follow my assembly instructions):

- 2 x M5x40 mm internal hexagon cylinder head screws (handle)

- 2 x M3x40 mm internal hexagon cylinder head screws (hinges backside)

- 4 x M3x35 mm internal hexagon cylinder head screws (side lates upper and lower connector)

- 9 x M3x4.2 mm heat inserts (inner lid)

- 9 x M3x5 mm internal hexagon flat head screws (inner lid)

You can find detailed assembly instructions and photos here:

https://www.youtube.com/watch?v=0cmNNvzUK98