Un bouquet

un bouquet = a bouquet (duh!)

Also worth noting:
un bouquet garni (literally garnished bouquet) is a bundle of aromatic herbs used in stews and soups
le bouquet final (literally final bouquet) is either

• in construction, the "topping out", ie addition of a branch/ribbon/bouquet on top of a new construction to celebrate its completion
• the last few shots of a fireworks display