Make sure to have a bit of concealer, powder and eyeliner to touch up your face in the morning. If you are super organised you could maybe even have a few makeup wipes in there and them use the makeup you have to hide any bags under your eyes, so you look fresh enough to face the day.
Again if you're really organised you could pack your toothbrush and toothpaste (or rob some theirs). Morning breath is gross, and when alcohol is involved it's even worse. So having something to mask the smell is great. Even 'borrowing' some of their mouthwash could be a great plan unless you're trying to get out of there asap.
3) Mini-Hairbrush & Hair-Ties
No lie, your hair is going to most likely be not unlike a bird's nest in the morning. The super organised will, of course, have invested in dry shampoo, but who really has the time for that? A quick brush and tie your hair back and you look passable enough to cross campus without drawing too many looks.
There's nothing worse than walking in heels after a night out, your feet can only take so much torture. You can get fold up flats online or in loads of shops or just grab some flip flops (depending on the weather). It's better than going barefoot. If you know there's a chance you might be heading home with someone else, why not try an outfit that doesn't require the highest heels, cute ankle boots are suitable for nights out and the next day. Problem solved! If you do wear heels and they don't fit in your bag, simply carry them in your hands and walk with pride, people probably won't even notice.
5) Anti-Perspirant Deodorant
Possibly the best invention ever gifted to us by mankind. It can be used as an impromptu body spray/perfume to conceal as much of that sweaty boozy smell that's lingering around you after last night's events. Now all of the deodorant peeps are doing those compressed deodorant sprays, you have literally no excuse for not having one in your bag for emergencies.
6) Simple Sexy Dress
If you're hoping to end the night in someone else's bed, why not opt for a simple but sexy dress that you could wear during the day as well? Dress it up with jewellery for night time and make it more casual during the day with a simple cardigan and scarf. That way, when you wake up, and sort yourself out with the other steps, it will just look like you're the type of girl who likes wearing dresses that show off her legs to do her daily errands. Nothing racy about that.
So, if you follow these simple steps you should have no problem treking back to your house in the morning. And if you meet anyone who does give you a judgemental look, fuck them. You got laid last night, go you!