Floating bookshelf

"A pair of Vietnamese high school students from the south-central province of Binh Dinh have developed a bookshelf able to float. The model, recently awarded the grand prize at the provincial inventors contest for students, was created by 11^th graders Le Quang Hoan and Le Thi Bich Quyen in Tuy Phuoc District... The idea of a floating shelf came to the pair when they were the 10^th graders at High School No. 3 Tuy Phuoc. Quyen recalled a deluge that swept through her house and completely submerged the wooden shelf containing her coursebooks and materials."
Tuoitrenews