## What should I bring to CCCamp 2019 so I can enjoy card10?
*I have noticed that the card10 needs some maintenance; most people carrying a card10 have brought their own tools for maintaining their card10, making it more individual, or adding functionality. In some places, maintenance stations are available, where card10's can be recharged, and tools and knowledge is shared*
According to current research, it is recommended to carry the following:
* A USB-C cable for plugging your card10 into your laptop USB port is key for charging and programming; USB-A on your laptop side is fine.
Optional things that will come in handy:
* A Torx T6 screwdriver for assembling card10
* A needle for sewing to the card10 wristband
* An Android phone or iPhone capable of communicating via [Bluetooth Low Energy](/en/ble)(BLE)
## How can I contribute?
Generally, there is a wide range of contributions that can be made to the firmware, the iOS and Android apps, the various methods of BLE communication, the user interface, the documentation, by reviewing existing work, and of course by creating your own [interhacktions](/en/interhacktions)!
