I answered this, maybe dreamwidth ate it...anyway, feel free to have an extra week to post your dares since it's so late for you getting this (hopefully)

Take selfies with five random people by the end of the day. Post them to the network when you're done.
TP someone's house.
Call someone up and tell them what you honestly think of them.
Dance with one of your housemates - if you have none, one of your nearest neighbors on either side.
Cook an entire picnic/meal and hand it to a complete stranger.
Invite someone to take a bath with you.