This is a very poignant image of a man breaking through his chains to gain the rightful freedom he deserves. Very touching image of self realized power! (This image is based off elements from a US Government propaganda poster, and thus it is public domain.)
賦予權力的人
African American、America、black、blackhistorymonth、chains、empowered、free、freedom、history、male、man、Mylikes、power、propaganda、slavery
非裔美國人、美國、黑色、黑人歷史月、鏈、授權、自由、自由、歷史、男、人、冠、功率、宣傳、奴隸制度
資料來源：openclipart ( https://openclipart.org/ )

A bird in stained glass effect.
鳥彩色玻璃
bird、Circle Icons、duck、filters、stained glass、t-shirts
鳥、圓圈圖標、鴨、過濾器、彩色玻璃、T卹
資料來源：openclipart ( https://openclipart.org/ )

Didn't pushed it as far as with that heroine, but it got cleaner a bit. 資料來源：openclipart ( https://openclipart.org/ )

I literally scanned my hand to create this silhouette, then used the potrace tool in inkscape to create vectors. I chose earthy colours inspired from cave of hands rock art in Australia and Mexico.
手印
children、earthy、eroded、family、hand、handprint、handprints、hands、paint、print、prints、sign、stamp
孩子、泥土的、侵蝕、家庭、手、手印、手印、手、塗料、打印、版畫、標誌、郵票
資料來源：openclipart ( https://openclipart.org/ )

A happy looking girl is surrounded by falling confetti.
五彩紙屑女孩
celebrate、celebration、Comic characters、confetti、girl、happy、prize、Shiny Happy People、win、winner
慶祝、慶典、漫畫人物、五彩紙屑、女孩、快樂、獎、閃亮的快樂的人、贏得、優勝者
資料來源：openclipart ( https://openclipart.org/ )

The San Martinos Chuch marble lion from Lucca, Italia
獅子
animal、bestiary、lion、middle age、www
動物、動物寓言、獅子、中年、萬維網
資料來源：openclipart ( https://openclipart.org/ )

A realistic drawing of a simple student microscope.
顯微鏡
bacteria、biology、Cell Culture、cells、micro、microbe、microscope、science
菌、生物學、細胞培養、細胞、微、微生物、顯微鏡、科學
資料來源：openclipart ( https://openclipart.org/ )

A Peruvian design of a puma. Source: Encyclopedia of Design. New York City: Hart Publishing Company. Print. ISBN 0-8055-1276-4. Page 368. Encyclopedia bears the notice, "All these pictures are in the public domain"
美洲獅
animal、Caractères、cat、catamount、cougar、mammal、mountain lion、panther、Peru、Peruvian、puma、Various
動物、打印、貓、山貓、美洲獅、哺乳動物、山獅、豹、秘魯、秘魯、美洲獅、各個
資料來源：openclipart ( https://openclipart.org/ )

red tractor in simple mode done using inkscape
拖拉機
Alphabet Word Images、farm、simple vector、Tractor、vehicle
字母詞圖像、農場、簡單的矢量、拖拉機、車輛
資料來源：openclipart ( https://openclipart.org/ )

bearing, guolis
軸承
bearing、guolis
軸承、軸承
資料來源：openclipart ( https://openclipart.org/ )