Melting ice cubes time lapes

Since getting Nikon D610 I haven't explored much with it. Shame on me!
So I thought I'll test out the time lapse function. It works pretty well and I'm impressed with the result. Can't wait to do more time lapse videos in the future =)

When I did a test video, I forgot to turn off the auto focus. When I watched the video, it was flicking the focus, not good for the eyes. Now I've learnt my lesson and will turn off auto focus from now on.

This is my first time lapse video. Thought I'll start off with something easy, ice cubes! 
When I was a kid, I loved using the cups that would change colour with the temperature. But I don't think they make it anymore =(

Intervals: 10 seconds
Time: 3.5 hours