I did some research on your sandbox ( ew err vicar ) and managed to get some intel….
The Vice President Hippo, required a secure custom built travel device that could hold mud ( and various play hippo mags ), whilst being moved from base X to base Z.
Having sent out scouts to locate such a ( secure custom built travel device ) object, yours was deemed worthy and in turn was freed from its shackles to serve what hippos belive is a higher culture.
You may scoff at some if not all of this intel, but I have it on good authority that it is genuine ( my mum told me ). Report it missing and perhaps I will be able to get a lead on where the VPH is located.
Help me help you and together that will make two 
( think I got that wrong )….
WOFH
Pete xx
REPORT ABUSE