If you were locked in a room for days …

[Lemongrts]

Working/revising/etc.

What sort of things would help? Want to nip to the shops and not sure what to get for DP who is stuck inside for next few days.

If your DP is working / revising then surely all they need is peace and quiet and sweets and crisps and chocolate? Take them regular drinks and make sure they have regular breaks.
I am about to be locked into a private room in hospital for a week and I have stocked up my kindle and packed cereal bars and sweets and headphones.

Radio and or music player, opening windows frequently for air change, tea, chewing gum and breaks for loo, movement, stretching and deeper breathing. This is how I did mine.