Plastic box --{Balancing [Contest]}

Plastic boxes are the answer to life.
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Balance something or a combination of somethings in the most inventive way possible.

Best balancing wins.

No lua or gravity alteration etc.
No altering level values.

[b:25ejoarj] Must be a derivative of this level.[/b:25ejoarj]
Must have derivatives allowed.

You have a week.