i knew it was going to be that video...

looks like a midi controller of some sort.

i think the bassist was using like an ebow sort of thing.

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Well from briefly surveying the youtube comments and checking some things, the bassist is using a cool pedal thing called a Hot Hand that works with that ring.

The guitar thing looks like some form of Kaoss pad
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That is the coolest thing I've seen in a really long time. Thanks TS.
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The guitar thing looks like some form of Kaoss pad
Almost certainly. Looks a bit different to a normal kaoss pad though but they've been around for long enough for there to be clone type things out there.
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