There are many programs to edit your own icons, but if you are really looking for something simpler, without great pretensions and that is not full of complex tools and functions that you will not use, then what you need is this GoldIcon.
With GoldIcon you will have at your disposal a small and simple editor, totally free, with which you can create your own custom icons at a great speed, because the whole process is very basic and primary, but with more than acceptable results.
The icons you create with GoldIcon will be 32x32 pixels in size and will be in 16 colors.
You can free download GoldIcon and safe install the latest trial or new full version for Windows 10 (x32, 64 bit, 86) from the official site.
Devices: Desktop PC, Laptop (ASUS, HP, DELL, Acer, Lenovo, MSI), Ultrabook
OS: Professional, Enterprise, Education, Home Edition, versions: 1507, 1511, 1607, 1703, 1709, 1803, 1809