YFiSelect is an excellent little productivity tweak that allows you quick access to the list of available WiFi networks and to quickly change to another. For me, this is a boon as I regularly have to switch around at my office
The tweak can be launched either from SBSettings, by holding down the WiFi toggle (cool!), or via any assigned "Activator" action, meaning it is completely customisable to your needs!
The easiest way to demonstrate it is via the following skitch
YFiSelect 5.0+ is compatible with all iPads and runs fine on the 6.1 jailbreak
Get it from the Cydia Store for $2.49 today!