Do you have any ideas about what you want? Do you want a year/month/week long lead in to a specific event or weekend or week? Do you want to entertain just staff or is it clients as well? Where in the country are you based?
I'm very uncommercial so have zero interest in any corporate outing but some people seem to like the idea of golf/football/sailing( Jeannie Johnson?) outings with business colleagues ( yech!!!) or weekends away.
One of the best most memorable outings I have ever been on was a trip to Portsmouth (?) for a private dinner on HMS Warrior to celebrate a 25th wedding anniversary. We were piped on board, there was a string quartet, champagne and canapes ( or dead things on toast as a friend says) a fascinating tour of the ship and then dinner for 25 in the Wardroom. At dinner, after every course, the men moved two places to the left which meant that everyone got to talk to each other.
It still brings a smile to my face when I think about it. And I have no idea how much it cost.
mf