Well this one needs no explanation. We all have laptops at home and often our posture while using laptop is not the most ideal.
This laptop desk helps to maintain a good posture while avoiding a hot laptop on your lap. It has grooves to provide for the hot air to escape. Its made of plastic but seems pretty stable. Its inclination can be adjusted and the height of the legs can be adjusted too. It has 2 parts the laptop desk and mousepad. You can change the inclination of both of them independantly. It also comes with a reading light for working in the dark.
Its available in Walmart currently at 25$. I think its worth it since we spend so much time on the laptop.