I don’t remember how I found the Pelikan Twist, a pen designed for teaching kids to hold pen properly. Got one (black) “as a joke” for Christmas (it was on my wishlist), and very soon after I added 2 more (Shine Mystic and gold, gold version is supercheap in Amazon Spain): it is one of the smoothest pens I have ever used, and a joy to hold.
Visualising (via animations) the hidden cost of attrition on teams. Mostly based on the impact on graphs (of connections and knowledge). Losing one person can have a disproportionate impact due to their connectivity.
I got one of these for my birthday (but due to shipping issues it only arrived this week). It looks like good quality. So far I have only played with UIFlow (the almost no-code experience you can use to program it with a visual language).