Play begins with all the items inside the box and the stack of cards on top of the box...

>Play begins with all the items inside the box and the stack of cards on top of the box. The top card is revealed and players put their hands inside the box and attempt to recover, by feel only, the item pictured on the card. The winner is the player who finds more of the items.

How might this game be 'spiced up'?

Make sure the top card is an enraged mongoose.

Mousetraps.

Hot coals

THE GOM JABBAR

Instead of the box, items are put in someones pants

Nah, the items are normal stuff, but the whole thing is a painbox.

I feel like this could be turned into an adult sex game very easily.

Invite all your friend over to play, then shoot them.

Girl on the left just found someone's dick sticking up thru the table.