Suction ability with a device....like a vacuum or Kirby.

Ok so to solve a problem like this you need to break it down.

First question is to ask yourself what do I need to know to make this work.

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Well you need to know what objects are being vacuumed, the strength of the vacuum and the position of the end of the hose.

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To find the objects to suck up the best option would be a collider you can check to see if anything enters it. Then you can use built in collision detection to know when to suck up the objects.

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The end position of the hose can be just an empty game object as a child of the hose positioned at the very end of it and just use the transform of that component for its position.

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Now you need the sucking action. To suck something up in a vacuum you are essentially apply a force towards the hose end that falls off with distance.

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So you need rigid bodies attached to the objects you are sucking so that can respond to forces and apply a force towards the end of the hose with a force scaled by some factor proportional to the strength of the vacuum and inversly to the distance from it.

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This should get you started! Good luck.