Sounds simple right put six blocks in a box, no weird shapes just six simple blocks and a box.

You will need to print: 

6 x Puzzle piece

1 x Puzzle lid

1 x Puzzle body

 i made a few extra lids so you only need to print you favorite.

I would recommend letting the bed cool before removing the lid as it can warp if still hot

 you will need a small amount of glue to glue the lid on, just a small amount around the lip of the “body” is enough

if you need a little extra help I have left a solution video here, but SPOILER ALEART!!!! 

Quadra puzzle solution (SPOLERS)

I'm not sure who originally invented this but I saw it a long time ago and wanted to give one to my son.