Concrete is a great material, it's inexpensive and when done right it can look absolutely amazing. Unfortunately the hard part is the doing it right. Luckily the folks at Obleek Objects know to get it done. They have a special blend of volcanic ash and portland cement that makes their concrete planters 40% lighter than traditional concrete. Not only is it lighter, but it looks absolutely gorgeous. Their modern concrete planters come in sizes from tiny to x-large and cost between $45 to $200+. They also have a lovely assortment of tables and bird feeders.
Price too steep? I double dog dare someone to try this as a DIY and share your results with the group!