Digileg. A pair of these are just what you need for that Minotaur, Satyr, Werecat or other animal-like costume.
Digitigrade stilts! Digilegs allow the wearer to achieve the successful transformation of their human legs into the hind quarters of a digitigrade animal. This opens up endless possibilities in regards to new character / creature design.
DIY Ram horns. Reminder to use rolls of paper as forms for sculptures.
DIY: How to Make Horns. I'd imagine you could smooth it over later with fabric, or light clay, or mesh too!
Most accurate Faun costume I've probably ever seen. The non-bulky legs completely do it for me.