When it comes to balloons, streamers and confetti, a party shop will carry what you need.  If you want to save money, you could always make them yourself.  However, as it is a graduation party, having a banner or sign of congratulations is required.  Stores also supply these, along with mini-graduation caps. 

Plates, cutlery, glasses cups designed with graduation cap and diploma pictures can be personalised by adding the name of the graduate and their class year. 

The Internet is also a source of supplies if you’re trying to find something but do know what.  You can browse items, prices and find the right mix of what works for your party before making the final purchase.

Balloons, streamers and banners, it wouldn’t be a party without them.  Still, decorating in line with the theme of the party is necessary, but that doesn’t mean you can’t add to it.  Since it is graduation, you could hang a few tasselled caps along with the school colours and mascot. 

Add a personal touch, by getting hold of the yearbook photos and enlarging them.  Put up the pictures goes well if having the party for your own child or their friends who are also graduating that year.  Also, consider showing off some trophies and awards the graduate won through the years.