Abstract: A first aid backpack including a backpack body, a first storage bag, a second storage bag, a sealed first-aid box, a third storage bag, and solar re-charging device is disclosed. The backpack body has a top side adapted to be in connection with the first storage bag, a surface connected with the second storage bag, and a lateral side connected with the third storage bag. The first storage bag has an affixing part having a first solar plate and a movable part having a second solar plate. The movable part is connected to the affixing part. The third storage bag is for storing the solar re-charging device, which is coupled to the first solar plate and the second solar plate for receiving an electricity voltage.

Abstract: An impact-protecting structure includes a rigid body, a soft body, an adhesive layer, and a plurality of illuminating particles. The rigid body has a corner portion and a plurality of side extending portions extended from the corner portion. The soft body has an impact-resistant portion and a plurality of side covering portions extended from the impact-resistant portion. The soft body covers the outer surface of the rigid body. The adhesive layer is affixed onto the inner surface of the rigid body. The illuminating particles are disposed within the soft body. The impact-protecting structure offers warning capability and buffering effect against impact.

Abstract: A water level and temperature alert device including a temperature sensor, a level sensor, an alert unit, and a computing unit. The computing unit is connected to the temperature sensor, the level sensor, and the alert unit. The level sensor is connected to a first electrode and a second electrode. When the first and second electrodes are shorted, the level sensor would output a triggering signal to the computing unit. As the computing unit is enabled by the triggering signal, the computing unit further attains a water temperature signal off the temperature sensor. According to the temperature range where the temperature signal falls into, the computing unit would trigger the alert unit to illuminate in different colors. The aforementioned alert device can further transmit the temperature and power level data to a remote host unit or communication device via a wireless technology.