Funny seeing this thread - I have spent some of the afternoon thinking of best ways to hide the toys from the children! Perhaps ask your parents where they keep theres? (just kidding - obviously).
'Fraid I can't really help - hiding from children is obviously easier than hiding from parents, but I do have an amusing (ish) story regarding this dilemma which may (or may not) lighten your mood. Many years back my ex's mother was burgled and we were with her when she walked into her property to find the front room looking like someone had thrown a grenade in it. She stood shocked, unable to survey the damage, whilst I phoned the police who promptly told me to 'not touch anything'. So, sure enough, we sat in the front room and awaited the police's arrival. When they did turn up, and after opening questions, we were asked, has anything been taken from upstairs? Well, we hadn't even looked so up we went, with the policemen and there spread out on the ex's mothers bed was about 20 sex toys ranging in size from 'human' to 'elephantile'.
I have to admit, it was hard not to laugh at the mother in laws embarrassment - though in fairness, the 2 policemen were very professional!