I don’t think so, I’ve never seen one at least. The headset is a part of the kit and the kit includes the game cartridge that enables you to use the headset in conjunction with the other things that you build. There are a few applications that require the headset only, but they are pretty basic. The kits are fun!
Later this month BOTW is getting a patch to allow you to switch to Labo VR mode at any time, and Super Mario Odyssey is getting a patch to add a small amount of Labo VR content. It seems likely more games will support it, but that's all that's yet been announced.