Below is simple ways to beautify your android phone free.
You can use Mianogen.
Features: New classy UI, clean and minimal look, themed system icons, themed navbar icons, new switch design and toggles, new default wallpaper, and themed camera UI.
Simple ways to beautify your android phone free with holo icons
This Icon Pack, can be used to replaced your default launcher icons and this Icon Pack is compatible with most popular launches available for free in Google Play.
You can get elegant and toned theme & icons pack for ADW, Nova, Apex, Holo, Atom and Go launcher.