Tube Cage for a Cary Rocket 88

I just purchased a Cary Rocket 88 r and am finally completely satisfied with my system (for now). The only thing I did not really think through was how hot those tubes get and my 9 month old son reaching out to grab them. My wife burned her hand last night �trying to turn that damned thing off� so needles to say she is not quite as happy with the amp as I am. Because of space limitations I can not get the amp moved from its current location and away from little fingers so I'm hoping that someone out there may be able to suggest a tube cage solution that I could adapt to the Rocket (Cary does not have one).

Thanks