This is just an idea I recently had. It's a weapon that is just a 1x1 brick, but you can throw like the default spear. It wouldn't explode on impact or anything, it will just deal a fair amount of damage to any player it hits. The colour of the brick can be edited in RTB preferences via a colour hex code, RGB sliders or something.
Also, if possible, when the weapon is spawned on a brick, it could align to the grid, so it can be "disguised" as a regular un-interactible brick.
This is just an idea I had. Although I have no intentions for this, I'm sure I'll have some later on. But for now, it would just be funny if this was possible.