Do you want to create your folder without any name? Follow the steps given below...
1) Select any folder which you want to rename.
2) Right click and select 'Rename'.
3) Press and hold 'Alt' then press 255 on the numpad present at the right side of the keyboard.(Dont type the numbers 255 from the keys at top of the keyboard)
4) Press Enter. Now you will see your folder without any name.