Keeper of The Spirits said:
Is that ice baller worth the 65 bucks, I use hot water in these and get nice clear balls.
https://www.amazon.com/gp/aw/d/B007ACTN54/ref=mp_s_a_1_1?ie=UTF8&qid=1482333051&sr=8-1&pi=SX200_QL40&keywords=ice+ball+mold&dpPl=1&dpID=319frnL3XOL&ref=plSrch
You do NOT get clear ice balls with those Tovolo plastic things no matter what you do to the water (heat, chill, distill, whatever).
The Wintersmith's gadget is really pretty ingenious. If you are a hardcore cocktail enthusiast, I would highly recommend getting their ice chest ($120) which makes four at a time. Expensive I know, but really is the best out there for what it does without going to stupid lengths to get truly clear ice. The price is a function of the ease they have created for you. I have no experience with their smaller models.
Their ice chest allows you to do spheres OR cubes. (Although it only comes with one mold. To get both, you have to purchase the other.)
If you want to keep it under $20, I would highly recommend the
Death and Company modern cocktail book. If they are a real enthusiast, they will appreciate it greatly.