See (and vote for) also https://glpi.userecho.com/en/communities/1/topics/248-add-markdown-support-in-tickets

I have recently opened a similar request for the "notes" field: https://glpi.userecho.com/en/communities/1/topics/1977-add-markdownwikirich-text-support-in-notes. Maybe all those who have voted for this request, could also vote for mine and vice versa? This would give both wishes more votes :-)

Good idea.  This could be some kind of "non-instantiable" object: Fill panels, cable ducts, bare shelves, even UPSs if you don't want to inventorize them individually