Create a thought-provoking collage with a central theme of 'Manifest'. The collage should be filled with a variety of images that bring to life the concept of creation and bringing ideas to reality. It can include visual representations of dreams turning into reality, aspirations becoming accomplishments and thoughts transforming into tangible objects. Also, integrate symbols of the process of manifestation like seed sprouting into a tree, caterpillar transforming into a butterfly and sketches turning into masterpieces. Use vibrant colours to illustrate the power and energy involved in the process. To keep it diverse, include people of different descents and genders, all engrossed in manifesting their ideas into physical entities.