The so called outdoor planters can be used in the gardens, balconies or the patio. You can buy them in all kinds of sizes, designs and materials to match you desires. For everyone and in every price class you can find a planter.

If you are on a budget you can buy inexpensive mass-produced plastic planters if your budget is bigger you can also buy custom designed planters.
Planters that are constructed with heavy materials like bricks of concrete are intended to be placed in a permanent position.

If you want something totally different, then the ones you can buy, or if you are on a low budget you can also use non traditional planters. Look around your home to get some ideas. For example, an old tire is perfect for a planter. So, just look around, use your imagination and think out of the box will give you some great ideas.