NiftyBlocks adds tons of miscellaneous doodads and decoratives to improve your Minecraft experience.
That includes various materials, checkered tiles, a rainbow of brick types, the gravitational levitator(1.7.10 exclusive), the nifty block and much much more! This mod is a constant work in progress so I'm always adding new things in when I have the time. Happy building!
Forum thread: mariofishs Emporium of Nifty Mods
and a special thanks to goldensilver853 for getting me started.