Every marketer needs some inspiration from time to time. Check out these creative campaigns and marketing tips that made headlines recently:

Marketing to millennials? Combine mobile with user-generated content, according to this.
Lionsgate targets mall shoppers via mobile with movie trailers, calendar reminders for opening dates.
GrubHub unleashes Snapchat's potential with daily challenge, food giveaways.
Office Depot demonstrates marketing uses for wearable technology.
What's the key to success for a brand's mobile app? Sustained engagement, not just downloads.
Twitter is testing a click-to-call button for ads, making it easy to connect with businesses and brands.
Better Homes draws 10,000 entries via an Instagram contest.