Chris Winters rents bouncy castles and inflatable party games from his base in Rowley Regis.
But in March he was burgled causing his business to almost fold.
This CCTV footage shows items being stolen from Jumpin'Jacks Bouncy Castle Hire.
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His parents from Kirk Hallam are now warning parents about the beds, which have bases that hinge upwards to reveal a storage space inside.
The history of Clumber House is to be displayed in a new exhibition. The mansion in Sherwood Forest was demolished in 1938.
Showers will continue through the day and may turn locally heavy with a risk of hail and thunder.