It is a red rubber band left there by the postman. When my elder son was little he would seize on these bands and add them to the giant rubber band ball he was making.

在我的大儿子小的时候，他会利用这些橡皮筋，把它们缠绕在自己制作的巨大橡皮筋球上。

youdao

For a rubber ball, you could use a black or red specular light instead of white which would make the ball appear less shiny.

而对于橡皮球，你可以使用黑色或者红色反射光代替白色以使得球看上去不那么闪。

youdao

A red robot has a ruler and a rubber.

一个红机器人有一把尺子和一块橡皮。

youdao

The anti-government red shirts set up their own barricades of rubber tires and slowly drove a yellow tanker truck toward the soldiers, until shots were fired.

VOA: standard.2010.05.15

He recently received via FedEx a toy rubber sandwich wrapped in red cellophane with a note saying he wouldn't have to brown bag his lunch the following week if he'd let the sender take him to a restaurant.

WSJ: In Quest to Stand Out, Take Care With Gimmicks