In today's world, there is perhaps no more proven and positive way of presenting your company to people than with advertising items! Which child would refuse a deep-coloured balloon or some sweetness? Which adult would refuse a pen, mug or perhaps a USB key? Yes, you're answering right, if the deal is free, then none of them would have refused.
So why not try?
And maybe that's the core of success–everyone likes to get something out of the good will, you'll be grateful, and you'll be presenting the good name of your business. Or do you want to reward only your loyal customers? Also an option. A variation that is a good way to dispose of our items, there is really a lot of it, and it is up to you to decide what is best for the future of your company.