SanDisk has a number of products geared toward mobile devices, and two of the most popular are getting an update today with new top-tier storage options. The Wireless Stick now comes in a 200GB version and the Dual USB Drive has a 128GB variant. Both are already listed on Amazon too.
The Wireless Stick creates a small WiFi hotspot that you connect to on your device, allowing you to stream the content stored on it. The previous top storage tier was 128GB. The 200GB stick probably just has the NAND from SanDisk's 200GB MicroSD card inside. In the first gen version of this product, there was actually a slot where you could remove the card, but I don't know if that's still the case for the new ones. This one has an MSRP of $119.99, and that's what Amazon lists it for.
The Dual Drive has a regular USB 3.0 port on one end and a microUSB on the other. Just plug it into your device to access the saved content. These drives used to top out at 64GB, but the new 128GB version is just $39.99 on Amazon ($60 MSRP). This product is showing 2-4 weeks until delivery, so don't expect it right away. Both drives should be available at Best Buy as well, but the product pages don't appear to be live yet.