Smart home products, home security systems and plenty of gadgets to help improve your health were on display as International CES, the world’s largest consumer electronics show, kicked off its annual event Sunday in Las Vegas. The official convention doesn’t begin until Tuesday, but companies traditionally make big announcements to the press during previews days ahead of the show.

Here are some of the wackiest products on tap:

The Melomind

Stressed out? The Melomind, from a company called myBrain, is here to help you relax. The headband measures your brain waves in the same way a standard EEG does and then uses that information to create custom music to help you relax and decrease your stress levels. The product pairs with an app on your smartphone or tablet to play the songs – the $299 Melomind itself does not have headphones or speakers.

The Baby Glgl

With the Baby Glgl bottle, the French company Slow Control is targeting parents who want to mind how their babies are eating. The Glgl is essentially a plastic sheath equipped with an inclinometer that works to calculate the right angle for a bottle to reduce air bubbles. If the angle is too steep or too shallow, lights at the bottom of the Glgl will flash red; get the angle right, and the lights turn green.

The company says it’s looking to reduce symptoms of colic for bottle-fed babies. The bottle is scheduled to come out this fall for 100 euros, or roughly $119.

The W3D gaming smartphone

Snail Games is already a big name in China, but the firm isn’t nearly as well known in the United States. Aiming to change that, the company was on hand Sunday to show off the W3D gaming smartphone – a, long, thin, Android-based device that has phone features as well as traditional game controls for serious mobile play. The concept sounds like one Sony tried unsuccessfully to pull off with the Xperia Play. But the W3D has a bit more polish than that 2011 phone, and is expected to have more games at launch.

Ring

The Ring is a finger-worn controller for your smartphone and other connected devices that will make you feel like a wizard. Made by a Japanese company called Logbar, this somewhat bulky piece of functional jewelry is designed to be worn on the pointer finger and lets users draw gestures in the air to do things such as start the music playing on their phone, take a picture or even turn the lights on and off. To use Ring, wearers have to hit a button on the side of the ring before making their gesture; the ring then communicates with your smartphone via Bluetooth. Ring is due to come out in March with a hefty price tag of $269.99.

The Axxess CE Air2

This levitating Bluetooth speaker was an early attention-getter at the show, having been nominated for the International CES 2015 Innovation award. Apart from fascinating your friends, the compact speaker also can attach to your fridge if you’d prefer to have it off the base. The company promises five hours of battery life and a transmission distance of 10 meters. The company didn’t list the price alongside its demo.

3DRudder

Developed by architects looking for a way to show three-dimensional space, the 3D Rudder is a virtual reality controller that you work with your feet. The motion controller, which can be used for gaming and other virtual reality applications, lets you navigate through a 3D map by tilting and rotating your feet. You can also zoom in and out by putting pressure on the toe of one foot and the heel of the other.