Despite the passionate response, Byrd and Wilt remained committed and, as planned, Wilt decided to take their relationship to the next level by proposing marriage. However, before popping the question, Wilt and Hershey came up with a plan to make the moment even sweeter than expected.
As Wilt told Observer, not only had Hershey sent him and Byrd a care package with printed instructions showing the proper way to eat a Kit Kat, but the company also reached out to him privately with an offer to help if he ever decided to propose. In response, Hershey enlisted the services of Voxel Magic, a 3D printing company, which created a personalized ring box in the shape of a Kit Kat.
Source : https://aplus.com/a/man-proposes-using-3d-printed-kit-kat