Abstract: Reusable dish/bowl food covers have light, thin shell structures are invented. The covers' configurations are generally like up-side-down dishes or bowls. They have top wall(s) for user easy to handle, and leveled top surface(s) for user easy to stack the covered dishes/bowls. They are transparent such that users can see the food being covered.

Abstract: A new chopstick with disposable sleeve is invented. This invention is better than the conventional disposable chopsticks, and it can save trees for the environment. This invention consists of a stick and a disposable sleeve. The sleeve can be removably installed on the tip portion of the stick. Special designs on the sleeve and the stick are provided for easy installation, securing, and removal of the sleeve. The sleeve also has the texture on its surface to help grip the slippery food.

Abstract: New automobile vent airflow controllers are invented. In addition to the capability of changing the airflow direction as the conventional controllers have, these controllers can also adjustably diffuse the airflow. For most of conventional controllers, in addition to other parts, like the taps/dials and vent surround, each controller has two sets of linked shutter plates, one on upper level and one on lower level. Unlike the conventional controllers, these controllers have a total of three to four sets of linked shutter plates arranged in two levels. The orientation of each set of shutter plates can be independently controlled.

Abstract: Various simple back scrubber-massagers are invented for the shower/bathtub surround. The scrubber-massagers can be made for permanent installation on an existing shower/bathtub surround or they can be made as a built-in feature of a shower/bathtub surround. Basically, the back scrubber-massagers have either one wall or two parallel walls. Both sides of the footing of a wall are curved for easily cleaning. The top of a wall is smooth and with or without texture. For a two-wall configuration, a protrusion along the upper portion of the inner side of each wall is provided to help holding a sponge or towel between the walls.

Abstract: Various simple back scrubber-massagers are invented for the shower/bathtub surround. The scrubber-massagers can be made for permanent installation on an existing shower/bathtub surround or they can be made as a built-in feature of a shower/bathtub surround. Basically, the back scrubber-massagers have either one wall or two parallel walls. Both sides of the footing of a wall are curved for easily cleaning. The top of a wall is smooth and with or without texture. For a two-wall configuration, a protrusion along the upper portion of the inner side of each wall is provided to help holding a sponge or towel between the walls.

Abstract: A back massage device having spaced mounts on one side of a base and a fastening means, e.g. adhesive tapes or the hook-strips of the VELCRO, on the other side. The device has no moving parts, is small, and can be used at home, in office, or in a car. The user just installs the device on a generally vertical surface, like a wall or a chair back, and rubs his/her back against the mounts while sitting or standing to achieve the massaging effects.