An impartial and highly scientific undertaking.
Cereal
Minimal effort, minimal reward. Cereal is for the boozer who just wants to go to bed.
Rustlers
The WKD of post-pub snacks. You could say you were being ironic, but we all know the truth.
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Crisps
A stopgap, nothing more. Even with hummous, crisps aren't going to help your head tomorrow morning.
Toast
Plain buttered toast (never margarine) is to drunk food what Ant and Dec are to presenting. It's familiar and comforting, and will do a perfectly fine job.