Stability and durability are important aspects of any lasting Lego build. Start by ensuring a strong foundation for your creation by using a large Lego plate. Then, reinforce the base with additional bricks for extra stability. When building taller structures, consider reinforcing the internal structure with support columns or pillars hidden inside and out of sight. Use techniques like interlocking or overlapping bricks to add even more strength. And, of course, be sure to handle your creations with care to avoid any accidental damage.