Amazon has the Phicool 32GB USB 3.0 Flash iPhone Drive for a low $16.19 Free Shipping after 5% clip on coupon on product page and Coupon Code: "MFYCMSP8" (Exp Soon). This normally retails for $30, so you are saving 45% off list price.
IOS,micro USB,type-c 3.0 & USB 3.0 ports
Touch ID/password encryption
Easy transfer/ backup/copy files between iPhone Flash Drive and device