Does anyone know where I can buy a room divider or folding screen for under $40 bucks?

I stay in Long Beach California.

Anyone has any ideas on how to make a closet/room divider?

My room does not have a closet. I was wondering if anyone has any clever and inexpensive ideas on how to create a closet/room divider?

Does anyone know how to make a room divider from hollow core doors?

Years ago, I used to watch a show called Interior Motives on the Discovery Channel. Christopher Lowell had all kinds of neat ideas on this show. In one episode, he made a room divider out of hollow core doors. The divider was shaped like a U, kind of. On one side, he put another core door horizontally attached between the doors to make a desk. On the other side, I think he put a bed or a sofa, or something. I have a very large unfinished basement with a concrete floor. We use one side as a playroom and the other side for laundry and storage. I wanted to use this idea or something like it to make a craft area for myself and my kids. I can remember the basic idea but can’t remember what was used to attach the pieces. I want it to be stable and sturdy so it doesn’t fall over or hurt anyone. Any suggestions, or ideas about where I might find directions for something like that? I’ve done multiple web searches and can’t find what I’m looking for.