To measure the success of your event gifts, track key metrics such as booth traffic, leads generated, social media mentions, and post-event survey feedback. If you're offering tree kits or planting trees as part of your giveaway strategy, you can also monitor the number of trees planted and the environmental impact of your initiative. By analyzing this data, you can gauge the effectiveness of your giveaways in attracting high-quality leads and building lasting connections with attendees.