Don't... need... another... hobby...
... but man, this mosaic-making shop is really tempting. I've actually got a specific use for a portable mosaic (my lodge room, like most, doesn't actually have a representation of the floor of King Solomon's Temple, which always annoys the heck out of me when I'm doing the first degree, and a portable mosaic would be ideal for the purpose), and it does look like a craft I might actually be able to be decent at...