Answer:
E+フ Alphabet "E" / Katakana "Fu"
片+一+又 HEN, kata - part, one of two / ICHI, ITSU, hito(tsu) - one / mata - again, also, moreover
木+ツ+一+又 MOKU, BOKU, ki - tree / Katakana "Tsu" / ICHI, ITSU, hito(tsu) - one / mata - again, also, moreover
貝+一+又 KAI - shellfish / ICHI, ITSU, hito(tsu) - one / mata - again, also, moreover
日+コ+ニ+コ+又 NICHI, JITSU, hi, ka - sun, day / Katakana "Ko" / Katakana "Ni" / mata - again, also, moreover
Add | , a straight line, to make them something different!
印 IN, shirushi - stamp, seal, sign, mark
版 HAN - printing block, edition
板 HAN, BAN, ita - board
販 HAN - sell
暇 KA, hima - free time, leisure