Balloons with photos of memories tied to the bottom is a sentimental and thoughtful proposal idea. Let her pop all of the balloons to find the ring. You can fill the rest of the balloons with sweets, glitter or flowers.
This was a big thing with the Valentino show. The show was focused around romantic braids. This is just a french braid that starts in the middle of the crown and then wraps around your head in a counter-clockwise rotation.