This one will be a slow-burner, but since I was passing Ikea:
Rast (Euro 11.95) – a simple, naked nightstand that is exactly the dimensions needed for a 19″rack. It just need rails, upon which can be hung…
The Baugruppenträger (Euro 30.35 is 3-HE Eurororack compatible and comes with rack ears.
Total Cost: 42.30 euro
Next to investigate: power supply options.