Amazon Deal!
Not for everyone, but a really useful, full OpenWRT router that works as a virtual USB WiFi Adapter. Same size as a thumbdrive. Same interface as the rest of their range. Runs off a powerbank for a long time.
Protect your self with a firewalled connection, run a Vpn for all your devices, easily connect multiple devices, run a Chromecast on a captive portal on public/free wifi connections.
Smaller size, lighter weight and lower power usage than other mini routers.
GL.iNet GL-USB150 Wireless Mini Portable VPN wifi Router
[USB WIRELESS ROUTER] USB mini travel router for working professionals. Lightweight (10g) and pocket friendly. USB to Ethernet networking.
[OPEN SOURCE & PROGRAMMABLE] OpenWrt/LEDE pre-installed, backed by software repository.
[OPENVPN CLIENT] OpenVPN client pre-installed, compatible with 30+ VPN service providers.
[STORAGE] DDR2 64MB RAM / 16MB FLASH ROM.
[PACKAGE CONTENTS] GL-USB150 (microuter) USB router (1-year Warranty), User Manual.
nice - preconfigure openvpn client to connect to a server set up to the home network and carry it anywhere to connect to any wifi connection / automate vpn and dns lookup config I assume… well worth $20 for travel purposes (not long to wait now hopefully!)