Have you ever wished for easy mouse controls to go along with your VR headset experience? Or maybe you just want a cooler way to mouse in general. In any case, look no further than [rafgaj78]’s Bluetooth Mouse Ring project.

This is version two, which of course comes with several improvements over version one. The biggest change is from tactile buttons to a joystick input. [rafgaj78] also did away with the power switch, using deep-sleep mode instead. Version two is easier to assemble and offers improved ergonomics, as well as a range of ring sizes.

Like the first version, this ring runs on a Seeed Xiao nRF52840 and is programmed in CircuitPython. There are two modes to choose from. In one mode, the joystick does left and right mouse click and wheel up and down, while the push action recovers the micro from deep sleep. In the other mode, the joystick axis is a mouse pointer mover, and you push down to left click.

We really like this sleek design, and [rafgaj78] has great instructions if you want to build your own. This isn’t the first cool mouse ring we’ve seen, and it certainly won’t be the last.

This holiday season, [Chaz] wanted to continue his family’s tradition of enrobing a little bit of everything in dark chocolate, and built an improved, rotating chocolate-coating machine.

You may remember last year’s offering, aka the conveyor belt version. Although that one worked, too much chocolate was ultimately lost to the surface of the kitchen table. [Chaz] once again started with a standard chocolate fountain and bought a round wire rack that fits the circumference of the bowl at the bottom. He snipped a hole in the center large enough to accommodate the business part of the fountain and printed a collar with holes that he cleverly zip-tied to the rack.

[Chaz] also printed a large gear to go around the bowl, a small gear to attach to a six RPM motor, a motor mount for the bowl, and an air blade attachment for a portable Ryobi fan. The air blade worked quite well, doing the double duty of distributing the chocolate and thinning out the coating. Plus, it gives things a neat rumpled look on the top.

Want to make some special chocolates this year, but don’t want to build an enrober? Get yourself a diffraction grating and make some rainbow goodies with melted chocolate.

You might say that the worst LEGO to step on is any given piece that happens to get caught underfoot, but have you ever thought about what the worst one would really be? For us, those little caltrops come to mind most immediately, and we’d probably be satisfied with believing that was the answer. But not [Nate Scovill]. He had to quantitatively find out one way or another.

And no, the research did not involve stepping on one of each of the thousands of LEGO pieces in existence. [Nate] started by building a test rig that approximated the force of his own 150 lb. frame stepping on each piece under scrutiny and seeing what it did to a cardboard substrate.

And how did [Nate] narrow down which pieces to try? He took to the proverbial streets and asked redditors and Discordians to help him come up with a list of subjects.

If you love LEGO to the point where you can’t bear to see it destroyed, then this video is not for you. But if you need to know the semi-scientific answer as badly as we did, then go for it. The best part is round two, when [Nate] makes a foot out of ballistics gel to rate the worst from the first test. So, what’s the worst LEGO to step on? The answer may surprise you.

And what’s more dangerous than plain LEGO? A LEGO Snake, we reckon.