Is there a more efficient way of putting decals on a part?

I don't like having to individually make a decal for every side of a part, is there anything that I could do?

The only way I can think of putting a texture on each side of a part without having to make a texture or decal for each side is by inserting a SpecialMesh into the part and then setting the property of the SpecialMesh known as TextureId to the desired ID.

Just keep in mind that you'll need to now change the SpecialMesh properties like Scale in order to change the size of the mesh. Here is how it should look like when set up entirely.

Hopefully this helps and if it did be sure to mark this answer as answered. Have a nice day!