Vintage cameras ready for Bluetooth conversion

My favorite, a collectible Russian Zenit 35mm camera, a copy of the popular post-war Leica 35mm camera

The inscription shown is the Russian name, translated into "Zenit" for English-speaking markets

The plastic "glass" on the fake lens shown here is no longer available. Current ones have a solid black front, but I still have two originals "lenses" left. Shown here on the vintage Yashica camera

$85, $95 with volume control

The other earlier model "lens"  is shown here on the Zenit, but the two I have left can be put on any of the four 35mm cameras  (your choice)

$100, $110 with volume control

I'll cut the the clear plastic globe seen here to make clear "glass" for the remaining cameras . This Canon camera is shown here 

$85, $95 with volume control

The new style "lens" is shown here on a vintage Vivitar 35mm camera.  Not sure how old this camera is, but I recall this style body from the 1970's.  

$85, $95 with volume control 

This speaker has an antique radio potentiometer that now provides the off-on switch

$80

I'm really excited about making smaller, more affordable Frankenstein models in 2025. I'll call them  "Young Fankenstein" 

$99

I'll make more full-size Frankenstein models, some with larger 4-inch full-range speakers plus 2 tweeters for an advanced "2-way" speaker system.  I'll also add parts like those shown here, like a working reproduction Weston  19th-century meter, and real copper wire coils

$214 as shown, 189 with standard 4x2 inch speakers

I can convert old transistor radios to small Bluetooth speakers.  The models shown here are from the 1960s, and are similar to the one that I snuck into school every day in my pocket.  

$35 with your supplied radios)