Don't: headbutt your new student offspring before leaving them (yes, it has been done and no-one will ever ever forgive you for it and it will be mentioned in your memorial service).
Do:
Ask the new student what they would like to happen
Find out what other people did and whether they feel it was the right thing (ie what you are doing)
Remember that apart from the new student themselves, you know them best and you are the most likely to be dealing with any of the mercifully rate serious adverse consequences, and you know more of the particular situation eg how they react to situations, how far away they will be, whether this is a course, a university, accommodation type that has been much considered/visited or whether it's been a last minute swerve. University insiders can be just as burdened with their personal self-interest or baggage as well as having useful knowledge. (Much like health professionals giving 'advice' about babies and young children) Oh and remember it might be them choosing your nursing home...
What I found useful/would have been useful:
Making the bed, getting things in the freezer/fridge, getting laptop/WiFi set up (perhaps not by you but whilst you are there) and just enough unpacking for it to be obvious if anything is missing that it would be appropriate to pop out and buy right now (eg chargers, milk if they use it). Not setting the whole room up or there will be no 'busywork' for them to do if there is no-one else around in the accommodation or they want to retreat for a bit.
Being in mobile reception/contactable through the following admin laden days whilst leaving it to them to make contact (there can be odd details they need to ask) I found WhatsApp really useful personally (esp if they don't have a notification sound on messages so won't be disturbed) inc 'last seen'
Parking, whatever, I'd endorse the importance of, on this day, not indulging yourself with anger about anything. Whilst this is a rite of passage and to be honoured, it is not obligatory to cry so don't feel bad if you don't.
Enjoy!