>>4245544I mean pinhole *body* cap, you can buy them for cheap on Ebay. They're sealed, so no dust gets in and they still function as a standard body cap, but work great as a quick and easy lomography lens.
I did buy a lot of non-NIKKOR glass for the kit, but I never really enjoyed using them, they all had chromatic aberrations, flares, and poor contrast. If that's a look you're going for then just start buying any cheap old generic NIKON F mount lenses you can find for around $20 and see how it goes, sometimes you get a winner!
My best non-NIKKOR find was a $27 "UNIVERSAR" 500mm f/8 stovepipe prime. It ended up being a well-built Japanese lens with a 12-blade aperture and was remarkably sharp for what it was, and though it did have a lot of aberrations I just fixed them in post.
*ATTACHED IMAGE WAS SHOT WITH THE 500mm LENS*