Personalized carabiner key tags are a great giveaway for your clients. They serve several purposes. They can be used as bottle openers, some have flashlights, they can easily be clipped to bags and apparel alike. Carabiner clips are great for tradeshow giveaways as they can be given away with water bottles and lanyards.
They also allow you to clip rings of keys together with minimal effort. Custom imprinted key tags are a must if you want to show your clients that you value them.