Foam board (for indoor use) and PVC (for outdoor use) are rigid materials that are manufactured in a straight edge format. But there is the possibility of printing and die-cutting them to give them the shape you want.
Types and materials
White foam board easy to die-cut up to 10mm thick.
White PVC easy to die-cut up to 10mm thick.
White Pegasus easy to die-cut up to 19mm thick.
Die-cut a foam board or PVC to shape a logo and stick it on the wall as if it were corporeal letters.
At weddings and birthdays it is widely used to shape initials or number.
Use large and not very twisted cuts. Very small dies break and do not fit well.