This manager will allow you to have a simple and minimalistic work environment. With a single toolbar, you will have all the rest of necessary elements organized in the context menu. When you need any function, you will simply have to click with the right mouse button. Fluxbox also has support for rounded windows and various graphic effects for the elements.
Fluxbox uses keyboard shortcuts and very simple menus as interfaces, which you will be able to edit to your own liking. You will be able to configure the menus, icons, wallpapers and windows until you like what they look like, adapting them to how you work.
If you are looking for a quick, light and simple window manager, you will like Fluxbox, because it has all these features.