Siege Equipment and Poisons
Alongside the other things to work on, I've decided to quickly take some time to add Siege Equipment and Poisons to the site, which are from the DMG, since I do believe that, while they are rare, they definitely fall under the range of player usable items in the same way wondrous items and such are
Siege equipment is complete, and at the exact moment of writing this I haven't started the poisons page.
http://dnd5e.wikidot.com/siege-equipment
http://dnd5e.wikidot.com/poisons