30块的4600毫安时充电宝，无线路由，读卡器，Media Streamer

Kingston Mobilelite Wireless G2 - MLWG2  amazon 大概30美元

4640 mAh 充电宝

USB flash drive, external hard drive (with NTFS support, up to 2TB) reader 包括 靠USB 供电的便携硬盘
SD reader

WiFi Media Streamer for Android 4+, iOS7+

WiFi AP with bridge to other WiFi capabiltiy for Internet

WiFi router with ethernet port (RJ-45)

WiFi router with compatible 3G dongle for 3G internet access

缺点 WiFi 只支持 不加密和 WPA2 PSK 加密， LAN IP 固定在 192.168.201 范围，支持的3G dongle基本是欧亚版的，
另外不支持4G dongle； WiFi client/bridge 只支持一个WiFi网，不能自动扫描几个指定WiFi网