The phrase "a host of extras" is correct and usable in written English.
It can be used to describe a large number of additional items or features, often in a context where something is being offered or provided.
Example: "The new software update comes with a host of extras, including new templates and enhanced security features."
Alternatives: "a multitude of extras" or "an array of extras."
That would probably mean laying off thousands of teachers, and eliminating a host of extras like after-school and early-childhood education programs that parents have come to count on.
19) is the most copious to date, with the film itself in its original wide-screen aspect ratio and a host of extras, among them the documentary feature "Hearts of Darkness," about the making of the film.
Michael Fassbender and Marion Cotillard, along with the rest of the cast and a host of extras, spent weeks squelching through icy bogs and warding off frostbite – without a scrap of Gortex between them.
A host of extras, including additional levels and unlockable characters, await players in SSB Wii U.
The week after Election Day, Warner Home Video will release "JFK (Ultimate Collector's Edition)," featuring the director's cut of Oliver Stone's 1991 drama and a host of extras covering everything from conspiracy to Camelot.
Meanwhile, among the affluent there are signs that spending on a host of extra luxuries has already started to slow.
It may have a classic, bare-bones design, or its sleek casing may conceal a host of extra functions.
Then came James Blood Ulmer's version, in a murkier vein and with a host of extra-musical connotations.
Among the key features to arrive next will be a host of extra mobs, the living creatures that inhabit Minecraft's procedurally generated worlds.
"That sounds sort of in the makeup-world kind of deal — that's not really me," Mario Lopez, a host of "Extra," tells Jonathan.
Fifty years of engineering studies have yet to turn up an obvious technical reason why an unmanned starship could not be built (crewed ships might be doable too, although they throw up a host of extra problems).
