conveniomatic
An item that, while perhaps convenient, is somewhat nonessential, even pointless. It is inspired by 1950s American-style advertising aimed at the 'house wife'.
'My new SuperVac400 with built in Soap Manufacturer sure is conveniomatic!'
'This Fisher & Paykel DishDrawer system is conveniomatic!'
'This Fisher & Paykel DishDrawer system is conveniomatic!'