[DisownedWheat]

Depends on what you define as small but if you remove the GDB debugging information you can trim down your binaries by a huge amount. My last project was 3.4MB.

[gardnr]

Back in the day I used to run the exe through and get them even smaller: https://upx.github.io/

[badsectoracula]

UPX is misleading though since it needs more memory than the EXE itself.