I have no idea how I thouught of another gift idea for your daughter when trying to get to sleep last night... but..here it is... I guess I was thinking of my grandma who passed away years ago and she would do this every year for Xmas. The ideas that everyone has replied to are great ideas

I know that a popocorn popper wouldn't be the main gift...but...just something to add on the gifts you get her. Remember that the best present she has though.is your love for each other

Now to get to my idea...my grandma used to have presents for each of her grandkids and our parents etc...then after all the presents were open, she would wrap necessaies seperately and disguise the presents in paper bags or whatever so we couldn't see what they were. Everyone would take a turn picking out a bag and when the bags were all distributed...we would have a swap. Whoever didn't like what they got in the bag they picked..they could try and bribe a family member on something they got that they wanted. So here is my idea....how about picking out stuff that she likes and can use and wrap each item in paper bags or whatever you choose and put them in a big box. Ideas are up to you..but..here are some ideas that i thought of for her that she could use.
Disposable Razor Blades, Her Favorite Candy, Bags Of Her Favoite Chips, The Deoderant Brand She Uses, Toothpaste, A New Toothbrush, Ink Pens, Notebooks, Alarm Clock, Any Kind Of College Supplies She Uses Alot, A Phone Calling Card To Call You, Shampoo-(The Brand She Uses and Rinse), etc. Am sure you get the idea what I mean. Hope this helps you

Good Luck

Oh one more thing....I think it would be nice to get her a teddy bear..she is going to miss you and if you get her one...she can have it on her bed when she goes to sleep and it would be a way of her to think that you are close to her. No girl is never to old to have a Teddy Bear..I love them and I have a few of them myself
I just thought of another gift..if she drinks coffee or cappucino...get her a small coffee maker to put in her room with coffee filters, sugar, cream and a coffee mug...maybe you could find a coffee mug that has her college name on it or something that she likes..or maybe you could get her a mug that says "dad" on it..now that would be special. When she drank her cup of coffee in the morning..you would be right there by her