Spare change on a speaker cabinet

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I have Magnepan 3.3/R speakers. Where the heck am I supposed to put the coins?

I like to put together relevent sets for such things. I'm thinking:

1) Beatles: "You Never Give Me Your Money"
2) Violent Femmes: "More Money Tonight"
3) Pink Floyd: "Money"
4) Boz Scaggs: "Loan Me A Dime"

Come to think of it, why not:

5) Boz Scaggs: "Some Change"

Best,
Rob <-- Hey, the name kind of fits, too!