I have a page dedicated to the ice tools that I use and recommend, but this post is centered on splurge ice gifts.
Clear Ice Makers
Assuming you're not gifting someone a refrigerator with built-in clear ice maker (those exist now), here are some ice makers.
The Ghost Ice Compact system is super sturdy and I use mine all the time.
I have not used one of the Wintersmiths ice makers but have heard good things about them.
There's a newish device for making clear ice called the Klaris.
Ice Chisel for Carving Ice Diamonds
I use this one.
Ice Ball Press
I use this one from Cocktail Kingdom. They also have a larger one on their website.
Once you've got clear ice, press patterns on it with the Ice Designer.
The Ice Book
Hey, I wrote it! Learn more about all the wild and wonderful things you can do with ice.