For a first birthday, focus on low-waste, social activities rather than clutter-heavy party games. Icebreakers like a 'name-tag game,' where guests must keep track of each other's names, encourage conversation among adults. For children, activities like a simple 'water play' station (with cups and spoons) or a bubble-blowing area are engaging, mess-free, and generate minimal waste. Focus on the experience and social connection rather than disposable party favors or single-use plastic decorations.