Your iPad may be a very powerful device. But it does not have a USB port nor does it read memory cards. It does have a limited amount of space for your files and photos though. With these iPad flash drives and wireless memory card readers, you will be able to share and access your files more conveniently:
Maxell AirStash Expandable Capacity Wireless Flash Drive: a portable wireless network drive for your iPad, iPhone, and Android devices. You can share your files with up to 8 other wireless devices at the same time.
Kingston Digital MobileLite Wireless Flash Reader: allows you to copy and transfer files between USB flash drives and SD cards. You can also copy files to your mobile device. This can serve as a backup battery source for your phone.
iPad Flash Drive: this Lightning gizmo lets you transfer and view files from you computer on your tablet.
Apotop DW09 Wireless Reader: supports SD cards and USB pen drives. It creates a personal cloud storage for iPhone and iPad.
Hama Wi-Fi Data Reader: a portable solution for connecting your SD cards and Flash drives to your iOS devices over WiFi. It accepts SD, SDHC, and SDXC.
These Flash drives and SD card readers help you transfer files to and from your iPad easily. They are not cheap but can save you a lot of time and effort over time.