Ran Hwang is best known for her wall sculptures that make use of common objects like buttons and crystals pinned directly onto the wall of the gallery. Using each element like a pixel on a scren, Hwang creates oversized murals.
Great link for ideas like this one For sibling tattoos: Roman numerals. Could go with IV since there are four of us or each of us get the roman numeral for where we are in the sibling line up. 74 Of The Tiniest, Most Tasteful Tattoos Ever