Jason Cichon created this Lego version of the PAL PM5544 test pattern.
Brick Tape is Lego-compatible silicone strips with pegs on one side and adhesive tape on the other.
Quest Builder is a clever submission to Lego’s Ideas portal.
With this set you can create your own dungeons and lairs for the heroes to investigate. There are dozens of possible layouts and setups. You can place the rooms in any sequence desired to create the lair you like.