To create a maximalist, memory-rich Christmas look, layer ornaments, ribbons, and keepsakes densely on your tree and throughout your space. Use various textures like velvet ribbon, brass accents, and handmade trims. Incorporate collected or heirloom decorations to tell a story and evoke memories. This look focuses on abundance and warmth rather than simplicity. Group sentimental ornaments by color or theme to maintain cohesion while showcasing personality and nostalgia.