I got this stylish bird-feeder for Ola this christmas. It fastens on the outside of a window with a suction-cup, and you get the chance to see the birds really close up.
They seem to prefer the feeder by the tree though, maybe they haven't noticed that I put only luxurious peanuts in the window feeder. Or it might be the big threatening figure (me or Ola) lurking just behind the peanuts. ;)