This is beautiful work from colour content, composition to presentation. Why would you bother using a Holga when you can make pictures like these. IMO colour pictures from the Holga lack impact and look like poor photography.
This on the other hand is good photography.
Again, nice Brad. You should look into a series on locks & latches. This would work great in color! I thought about shooting a series in black and white on door handles and hinges, but I only shoot MF rangefinders and they don't focus quite close enough. Well done!