It's not cheap. But it works very well for both 6x4.5 and 6x7 frames. I prefer this option to the specific 6x4.5. Always leave some space so the negatives don't get dirty.
📸 Fujifilm Instax Mini 11 Sky Blue Instant Film Camera - Includes Fujifilm Instax Mini Instant Daylight Film Twin Pack (20 Exposures)
11 Review
📷 Nikon 35mm f/1.8G AF-S DX Nikkor Lens - Black
46 Review
FUJIFILM INSTAX Mini 11 Instant Film Camera (Ice White) + Accessory Bundle with 4X Fujifilm Instax Mini Twin Film, Carrying Case, Strap & Funky Film Frames
40 Review
Video baby monitor Kodak CHERISH C225, black
19 Review