<human>:  I'm trying to plan a surprise party for my friend's 40th birthday next week. Any ideas for venues or decorations?
<bot>: For venues, why not try to find a restaurant or other private space that you can rent out for the night? As far as decorations go, you could hang up some banners or balloons, get some streamers, or even a few themed decorations depending on what your friend likes. You could also have a few fun activities for people to play!