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The National Library Board (NLB) has Book Exchange Corners at certain library branches. Here, you can drop off your old books for other people to bring home. Simply bring your books down and load up the designated shelves.

Branches with Book Exchange Corners can be found across the island. These include Ang Mo Kio, Bedok, Bishan, Bukit Merah, Central, Geylang East, Jurong Regional, Jurong West, Queenstown, Toa Payoh and Woodlands Regional.

还有国大医院和黄廷风医院的dignity mama 店，具体请网上搜。
救世军 salvation army 不过应该需要你自己拿过去
看哪个地方方便你吧。