From a request... here there are: symbolic four elements... i was thinking about including ether... but it doesn't have spark ;):D
象徵性的四個要素
air、earth、elements、fire、kitsch、request completed、source wiki、symbol、water
空氣、地球、分子、火、媚俗、請求已完成、來源wiki、符號、水
資料來源：openclipart ( https://openclipart.org/ )