if you want to stretch your budget or you have your own production team, you can rent just the props you need

Prop and Decor Rental / Hire
You should find that something similar to the props and decor shown here is available for hire / rent. If you go to a single source, they should be available in coordinated themes (e.g. Outer Space, Titanic, Undersea, Wild West / Mexican, Classic Roman / Greek, Funk, Love, Medieval, Jungle and many, many more).
You'll also find specialists that design and manufacture inflatable props for rent or sale (more here...) and similarly for fx such as mock flames, smoke, bubble and lighting machines.

Price Guide: from around £200 to rent a small set of themed party props

and many more pictures here...

KayDeeElle

..need your company or organisation's brand or message on a prop? You can get that rendered, too