You can make these three layer letters in a box. These are set up to cut at 4 inches. but you can move things around to and resize to make them larger. Those shown were about 6 inches. The size of the heart was 4 inches. I cut these in scal2 on my cricut expression using the svg files below. You can hang these on the wall with the provided hanger or leave it off, to set them on a solid surface. I have seen them attached to a ribbon and hanging on the wall vertically.
Make box back. I scored the box to make crisper folds. Make box front(I added piece of clear acetate paper in window). To assemble, place the three layers of letters on top of each other, separating with foam dot spacers. The fatter layer goes in the back. Cut 4x4 piece of contrasting paper for the back of the box(if you want). Add letter stack. Add lid to box.
I will be posting the whole alphabet soon.