People bring items to submit to the most unusual toy contest.  people vote
as to who found and demonstrated the most unusual.

One I saw at a party was a bumble ball in the subs panties ;)

Other items might be most unusual gag, etc.

Have people bring an item for a contest, but tell them nothing else.
Put the items in a box and then randomly select an item and hand it to
someone and they have to demonstrate its use as a sex toy.