[Unity Free] Imitation of displacement effect

I have sereral meshes on my scene and i want to deformate them (like its makes displacement ImageEffects on Unity Pro).
Visually it looks like this:

For now I found this plugin(https://www.assetstore.unity3d.com/en/#!/content/26165), but im not sure that it will be useful.

Can someone suggest how to implement it? I will be very grateful.

Also, sorry for my bad english.

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