eBay loves: Cheap and cheerful way to boost your signal.
Watch out for: Limited on ports and features.
A simple 802.11n device that extends your signal at up to 300Mbps, this comes with two Ethernet ports and can be set as an access point and router, or a simple client extender.
eBay loves: The five Ethernet ports effectively make it a second router.
Watch out for: If you don’t need the features, there are much cheaper extenders.
Its external antenna rebroadcasts up to three times farther than a normal router. You can disable it with a switch to save energy, and it has five Ethernet ports so you can create a second hub of devices.