micro SD card to SPI flash adapter from Bobricius on Tindie
EagleTec Nano USB Flash Drive with MicroSD Card Reader | Gadgetsin
USB MicroSD/T-Flash + M2 Card Reader
Ultra-slim Micro SD / T-Flash Card Reader II
Top Colorful 4 in 1 Micro SD Card Reader Flash USB Memory Card Reader For Memory Stick Pro Duo Micro SD/T Flash/M2/MS SD Adapter|Card Readers| - AliExpress
Kingston Micro SD Card with adapter | Digital Den | RIT
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2 Port Micro SD TF to CF Card ADAPTER MMC SDHC SDXC 2 COMPACT FLASH TYPE I UDMA | eBay