In order to

Distilled water is poured between the plastic or glass. Instead of water, there can be glycerin or vaseline oil.

The backlight is located along the contour, and it is made in the form of a diode tape. There can be several or one color flowers. Several colors can gradually change in a circle. There is a hidden cavity in the panel and a generator is hidden there, which produces bubbles. In order to be convenient, the compressor is placed in the basement or can be in the attic. This will not interfere, and make noise at a quiet evening. Simple design very updates the interior and makes new notes.