The problem with having a low budget at a trade show means that regardless of the swag you provide (that you can’t really afford), it will probably be overshadowed and won’t stand out among the rest of the booths, unless you come up with some original ideas. The key to driving booth traffic on a low-budget then amounts to user experience and memorability, by tying gifts or ideas to your brand message, and always ensuring that you are providing quality will help you to stand out!