FreeMinox 35 GT coin cell battery adapter (LR44)
Printables
13 model
Free
Free4x LR44 to PX27 Battery Adapter
Printables
Free2x LR44 to 2x PX625 battery conversion
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FreeBattery storage box (CR2032 & LR44 coin cells)
Thingiverse
FreeSkadis Battery Holder for LR44 and CR2032
Thingiverse
FreeAA size LR44 battery storage
Printables
FreeEPX825 Battery Adapter (PX625 to LR44)
Printables
Freekonica Autoreflex Battery Adapter 386 LR44 SR44 CR13N
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FreeBattery adapter PX21 TR133R V21PX PX-21 UG-523 TR133 (for Praktica)
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Free4LR44 / 4SR44 to V28PX Battery Adapter (Pentax 67)
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FreeMinolta HI-MATIC F battery adapter
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Free523 Battery Replacement/Adapter
Printables
FreeGridfinity Storage Box | Open Source
Printables