Giveaways built to be scanned, not binned
The test for a conference giveaway is whether it still has a use three weeks later. If the item can be used during the day itself, it is far more likely to be taken home than something that only represents the company. In practice this means a notebook with a page-per-session layout rather than a plain cover, a quality pen that writes rather than a plastic one, a cable organiser or a travel pouch for a laptop-carrying audience, or a printed field guide to a technical topic the exhibitor is credible about. What these have in common is that they were designed by somebody who has been to a conference and knows what people carry. What separates a giveaway that gets scanned from one that gets binned is usually a single detail: something on the item that makes the visitor want to look at it twice. A short URL printed on it, a tiny version number in the corner, a specific and slightly opinionated line of copy, a small diagram. That detail gives the visitor a reason to keep it rather than a reason to scan the QR code and drop it in a bag. The design rule is simple and it is worth enforcing: one item per stop, one idea per item, and no item that exists only to carry a logo.