Question

a device used by the designers and artists to get idea for new patterns​

Answer 1

Kalaeidoscope
This is the answer

Answer 2

Graphic Design Tools You Can't Live Without

1. Notebooks.
2. Creative Software. You can sketch out a lot of designs and ideas in your notebook, but every designer should consider creative software as a necessary piece of graphic design equipment.
3. Large High Definition Monitor.
4. Wacom Tools.
5. External Hard Drive.
6. Monitor Calibrator.
7. iMac Pro.
8. Procreate.