These items do exist, but are for DM use. There are potential abuses for these, so we prefer to keep them in the hands of the DMs (Also they don't work in the hands of a player anyway.). It is possible for me to create a version of the widget that does work for players and does not have the potential abuse issues, but that will come much later since I have other building priorities (Which I will hopefully get to in the coming week.).
That said, if you want any items to have custom names/descriptions you can either request a Leto for it, or ask a DM (I'd be happy to do so if I'm available, though as a word of advice it is generally frowned upon to bug DMs about DM stuff when they are logged in as players. But I'm nice like that.).