Using double B or the designated button to place an item, you can place the item cube, that has unique proprieties then the normal block like: it doesn't have shadow or collision, so you can go throw
it doesn't have the same texture orientation fallow like a normal block have, so some texture might be very obvious, find the one it fits best for your build
as default it's just half size then default block size, you just need to scale the item cube
WORNING: the render distance is different so if placed in the open on a side of a wall you can see the empty space until you get closer,
and also there is no shadow for items, but for that is an easy fix, use poster to be in the wall so you will create shadow (demo in the image)
you can also rotate them depending of where you is the surface you click so keep in mind that
seats can be an interesting addition because they don't have shadow but have collision
are you running away from someone? do they know the secret wall? place a camo door on the other side and make them fall to the pits of hell!
you have an underground base with other friend and they also know the secret wall? place seats in the secret wall so only a small corner pops within so you can jump on them to get to your secret room above
