Have you ever wanted to launch Siri without using the home button? The new jailbreak tweak SiriBoard adds an icon to your iPhone's SpringBoard so you can launch the voice assistant from your home screen. I prefer the app to holding down the home button because it only requires that you tap the icon. It also gives you two options to access Siri rather than just one.
SiriBoard is free from Cydia. It's located in the BigBoss repo or just search "SiriBoard."