It wets glass, as does gallium. It is useful for making low-melting alloys. Canada produces the majority of of the world's supply of indium. Here is a brief summary of the isolation of indium. Indium would not normally be made in the laboratory as it is commercially available.
Indium is a byproduct of the formation of lead and zinc.
Indium metal is isolated by the electrolysis of indium salts in water. Further processes are required to make very pure indium for electronics purposes.