I have thought up of a random challenge you might want to try.... Idk. Depends on whether or not if you'd want to try it. (Sorry I got boreed xD)
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Pop-up challenge: This challenge requires you to play a live (preferably the song you're pretty weak in) with full pop ups.

No volume challenge: Play a live without any volume. Just switch off the volume of your device. (This is pretty do-able)

Other technique challenge: If you play using your thumbs, try putting your device on a flat surface and use all your fingers. If you're a finger user, try using the thumb technique by holding up your device and use your thumbs. (Bonus if you are able to use only one hand or sausages)

Impossibru: Try all the challenges above at once. (I don't even know xD)
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Once again, don't ask. I just got bored xP