This is a very strong, visible flower production item

 you can use at any point in your show.

shows both side it freely to the audience and holds it flat in his hand.

With a command from him a bunch of flowers suddenly appears on the tray. 

Placing aside the bunch he turns over the tray;

 with another command from him 

a second bunch of flowers again appears on the tray 

causing double surprise to the audience. 

Alternatively, after producing the first bunch of flowers,

 you place aside the tray, perform some other tricks.

Then picking up the tray you produce second bunch of flowers 

thus causing further surprise.

Also before producing flowers you can first use 

the tray as a regular one in your show; 

later on you suddenly produce flowers on it 

구글causing sudden surprise to the audience.