The white plastic thingy is from a bread-bag or whatever. (I collect them. As one does.)

The wire is phone-cable being repurposed as speaker-wire (4 wires wrapped together in pairs, but that's not visible here).

The wood is part of an enormous bed-loft that someone left at @KathyH's house before she moved in, and which was used by 3 successive kids over ~3 decades. (It's now in my workroom at #HypertwinManor.)