SD/MicroSD Memory Card - 16GB Class 10 - Adapter Included : ID 2693 : $19.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Amazon.com: SanDisk Ultra 16GB Class 10 SDHC UHS-I Memory Card up to 80MB/s (SDSDUNC-016G-GN6IN) : Electronics
Amazon.com: Professional Ultra SanDisk 16GB Verified for Amazon Fire HD 8 MicroSDHC Card with Custom Hi-Speed, Lossless Format! Includes Standard SD Adapter. (UHS-1 A1 Class 10 Certified 98MB/s) : Electronics
SanDisk Micro SD Card Class10 TF Card 16GB 32GB 64GB 100% Original 128GB 256GB Max 140Mb/s memory card for smartphone and tablet - AliExpress
Amazon.com: Sandisk Ultra micro SDHC Micro SD UHS-1 TF Memory Card 16GB 16G Class 10 works with Samsung GALAXY S5 w/ Everything But Stromboli Memory Card Reader : Electronics