Must-Haves Cold Process Soap Tools (And Best Splurges!). There are basic tools like a stick blender and molds and a lot fancier tool like a comb swirl tool. In this post, The Soap Queen goes over a variety of different categories based on the convenience they provide, versatility and value. She does states that everybody has a different idea of what is essential, must-have, and what is a luxury item. But the tools she covers the tools she most reaches for. So see what she recommends and see if you need to get them yourself.