How to spice things up?

My boyfriend and I have been dating about 6 months, the last 2 have been long distance. We both are in college and pretty busy people so we don’t always text all the time. When we were both in the same country we would text a couple times a day, and then see each other over weekends usually. Now though we text more often but can’t see each other. Trust me I like texting him more, but also it’s getting a little dry. Everyday asking about each other’s day and then random stuff. What can I do to change things up a little and keep the conversations interesting? (We probably call about every other week as well for a couple hours which is nice!)