"That's one  small step for a programmer, one giant leap for Dual Universe" Neil Armstrong We already can place soil and rock inside our inventories. Create  a schematic that creates honeycombs from that soil. Those honeycombs can be used like any other honeycomb, but offer zero resistance. They can be used therefore as purely decorative honeycombs, and since they are so easily available soil honeycombs and soil schematic sell very, very low. To avoid many data-intensive tunnels