A double sided keychain with a middle plastic clip. This one is probably 20 years old. : r/wherecanibuythis

Double Sided Acrylic Keychains the Amazing Digital Circus Pomni

Double Sided Acrylic Keychains 2.5/6.3cm Fanmade

Double Sided Acrylic Keychains the Amazing Digital Circus Pomni

Double Layered Acrylic Keychains, Zap! Creatives

A throwback to the Parkway of the past- fondly remembered by adults (requires a lengthy explanation for anyone under the age of 20!). Double sided

Double-sided Parkway Token/Exit Sign Keychain

GP Money-clip Keychain – GPCA

Sleeky Case Your Own Photo Square Double Sided Custom Personalized Keychain

Personalized Custom Keychain with Picture - Turnable Double Sided Colorful Photo Key Chains Memorial Gifts for Family Lover

Cheeky Retro Hotel Key Chain — Camp Opal

Double Sided Acrylic Keychains 2.5/6.3cm Fanmade

20 Pcs in Total: Contain 20 multipurpose key tags in white color. Excellent for marking multiple items such as bunches of keys, suitcases, USB flash

Uniclife 20 Pieces Key Tags 2 Inch Plastic Key Chain Tags with Ruled Blank Paper Labels Transparent Covers and Split Rings Sturdy Item Identifiers

Double sided keychain : r/FixMyPrint