I was going to rush in and say you could buy an entire Holga camera for the price of one of the adapted lenses.
Then I noticed your location and shipping from the US might null that advantage. I figured that after removing the lens you would still have the base for a 6X6 pinhole camera. Two birds with one stone sort of thing.
Also noticed that a couple of pictures in your gallery are from Hornby island, my favorite place to "get away from it all" once or twice a year.