CES had a lot of interesting, innovative technology this year that has a huge potential to catch on with consumers. A lot of stuff also made me want to scratch my head.

Of the more than 20,000 gadgets on display, some are so bizarre that you need to see them to believe they exist. Weird doesn’t necessarily mean ridiculous, though. Sometimes, the oddest things at CES ultimately make a lot of sense.

The great irony about these bizarre products is that they tend to make it to market—something not all of the technology at the show achieves. Whether that will be the case with this year’s batch remains to be seen. But if you’re a collector of technology’s weird and wonderful, here are some of odder items we’ve come across.