Wild hair at lunch=a few minutes spent on a travel website=t-minus 18 hours & counting to a quick trip this weekend to Brussels. Yea!
Within less than 20 minutes of thinking, 'hm. it would be fun to pop down to Brussels this weekend. wonder if there are any cheap trips/train tickets left?...' and done. Two tickets. 5 star hotel. 36 hours in Brussels. Breakfast, late check in, and check out. All for under £200 each.