Idea for physics project competition ?

[ngkamsengpeter]

My school having a physics project competion and I don't know what to do ,can anyone give me some idea or tell me where can i find the physics project tutorial at the internet . I am a pre-U students(similar to A-level) ,I want to do a more interesting project .please elp me .

 

[ngkamsengpeter]

Now , I have an idea to build a hologram but I want to know that is it possible to build a full color hologram since every hologram I have seen is only one color that is same color as the laser beam.If yes ,how can I do it ?