Gift for boyfriend?

Ok so its 6th months that me and my bf are together and this time we are not next to each other and our kinda anniversary is in 4days (cause we are almost celebrating every month not a big celebration but just to remind ourselves). So for type of long distance relationship what you recommend as gift! For sure im not gonna buy something now and send it to him cause it takes lifetime to send to the country he is right now but do you have any ideas what to do on our anniversary?

I dont have much experience in long distance relations so if any of you have any ideas please help me