My advice is take a tape measure and work out what they need and have room for when they arrive, then order it online eg they will need a laundry airer, radiator ones take up less space but don't fit all radiators. Check that the bed is a standard single (one of mine got an extra large single and was warned to bring flat sheets, the other got a double but didn't know until they got there).
If they are in university halls:
Everyone will have white Ikea/Argos plates. Coloured plates and mugs are easier to reclaim when they inevitably get "borrowed".
Non stick stuff will get scratched by someone "borrowing" it.
Find out what cooking utensils are provided and how much space they have before you buy loads of stuff. Mine had one lockable kitchen cupboard and one fridge shelf/freezer drawer. Often, flatmates will get together online before they move in and organise sharing kitchen equipment.
Check what is electrical equipment is allowed. Fairy lights, kettles, rice cookers, slow cookers etc are often banned.
If you have Ikea Drona or Skubb boxes or drawer organisers, stacking shoe boxes, plastic stacking crates or underbed boxes etc, they are great for transporting stuff and (if they fit) can be used as extra storage if they need it. If they don't need them, take them back.
Extra pillows, cushions or a spare duvet for overnight guests wrapped in fabric are good for turning a bed into a "sofa".