This holiday shopping season, you'll want to think outside the box, or billboard, and come up with innovative ways to market your products.

One missing piece to your omnichannel marketing approach may be out-of-home advertising (OOH). DTC and B2C brands might think OOH is little more than promoting products on highway billboard ads.

With OOH, you can choose from various offline options, including street furniture, bus and train ads, and interactive displays that showcase real-time information.

Here are five of the best out-of-home holiday advertising ideas, that are not billboards, your DTC brand should consider adding to your omnichannel marketing approach.

Combine these techniques with your existing digital advertising efforts for maximum exposure at this lucrative time of the year.