Meet the KINGEAR Netac U335 Flash Drive: a USB stick with a write-protect switch that lets you enable read-only mode when you don’t want your data to be deleted by mistake. It has 64 GB storage capacity and works with Macs and Windows devices. You won’t need to install any special driver to use this.
Costs $35.99 at this time. 32 GB and 16 GB versions are also available.