This enameled tin cup has the slogan 為人民服務 Service to the People. The characters are traditional (complicated), which may mean that it was manufactured prior to the simplification of some of the characters on the cup. Today, the characters are written 为人民服务 in simplified form.
The sun behind three books of Mao’s quotes represents Mao, who is referred to as 红太阳, the Red Sun.
The tin cup was a common item. Most had a top. Many of them have deep tea stains in the enamel.
It is a postage stamp with an image of Mao Zedong with Lin Biao looking out toward the Tiananmen Plaza from atop the Tiananmen Gate. This is one stamp from a set of two. You can view the other here. Click to like.
A wind-up mechanical alarm clock with an animated arm waving Mao’s little red book.
It is a military book bag with the characters 为人民服务 “Service to the People” hand-embroidered on the flap. You can see a similar bag in the print here.