What to do for Father's Day for my long distance bf?

Ill be 20 weeks on Father's Day and I'm not really sure if I should do anything for him. He didn't do anything for me on Mother's Day but got me flowers. However I'm currently visiting family across the country so I won't be able to see him, and we'll probably both be busy spending time with our own fathers. 
So do I just send a nice text? This is our first baby and I want him to feel like I appreciate him staying by my side and being there for me. Obviously call him, but aside from that. A Facebook tribute lol??? I honestly have no idea. It's too late to send anything in the mail.