ALLNET Brick'R'knowledge board EMODS
It is intended for simple discrete components, both wired and SMD components, such as resistors, capacitors, coils, etc. But you can also easily build adapters with it. There is a hole in the middle, for example for contacts or antennas etc. If you want to drill it out, you have to be careful not to cause a short circuit with the ground plane on the back.