I have
previously tested a number of low cost solutions to macro photography. Mostly, they are quite hard to use, for example because they don't support changing the aperture or focusing. I think I had the most impressive results with a
reverser ring, however, the working distance becomes very short, and there is no aperture control or focus possibility.
Finally, macro extension rings with electronic contacts are available at a low price. They are marketed as
Meike, Skyblue, Neewer, and probably more names, and one pack includes two rings: One 10mm thick, and one 16mm thick. My rings look like this: