This is not about recycling. Not really. More about starting from where you are, with what you have.
The word comes from Latvian — tīrums, a field. A place that was once forest, cleared of roots and old growth, now open. Something grows there. Or it's just mud. It took a long time to get that way.
Paper was forest once too.
The root of the word is tīrs: clean, clear. Not sterile, more like uncluttered. The kind of clear that comes after letting some things, ideas or people go.
Attempts at explaining why? and what? has mostly ended up in flames. Some literal.
So here is what remains when the explaining and forcing of roles that don't fit stops: things made slowly, from materials that already had a life. TIIRUMS where something used to be.