Hi Hannah
In terms of making the day special, I’m sure you will manage that just by being there. I recently bought myself a really beautiful book for my handbag on Mindfulness. If he carries a bag or some such with him, a small book on a special topic might be nice. Either something with positive affirmations in it that he can reach too when he is struggling with negative thoughts, or quotes on love so that he can be reminded of you. Just something that he can have with him. I’ve also recently bought myself a beautiful little elephant pendant that I wear as a necklace. During the day it catches my attention and I remember the reasons I bought it. So equally, a little trinket that he could keep in his pocket and he can attach whatever meaning he likes to it. These don’t necessarily move me forward but they remind me how far I have come and remind me to stay strong.
Good luck and have fun