So I'm seeing my long time suicidal best friend tomorrow... What things can I/we do to make her day amazing?

For as long as I've known her she's had depression. It's just one of those accepted things. It's usually manageable, but recently has taken a turn for the worst. She tried committing suicide (again) a few weeks ago, but didn't succeed and is now in an institution, temporarily.

Basically, she has 6 hours leave tomorrow (of which I'll probably see her for 4 or 5 hours). So I want to know what awesome things we could do in that time to make her day as amazing as possible? I want to make her happy, even if it's just for the day.