BUG HOTEL

An insect hotel, also known as a bug hotel or insect house, is  a manmade structure created to  provide shelter for insects. They can come in a variety of shapes and sizes depending on the specific purpose or specific insect it is catered to. Most consist of several different sections that provide insects with nesting facilities – particularly during winter, offering shelter or refuge for many types of beneficial insects. Let´s build our Bug  Hotel; you can find some ideas than can help you to design it in this video. 
In this link you will get good advises to build your "Bug Hotel".