How do i express my gratitude to my online friends pls?

Okay i have the most amazing friends ever and they genuinely helped me get over things, also i learned to rely ob myself more and yadah yadah character development actually so anyways i like tried to gift them nitro but they refused to accept it and so im thinking maybe friend gift cards yk appreciation cards but i dont wanna come off as too obsessive or wtv. I just really REALLY want to express my thanks to them. Its just i love them sm for still believing in me even when all hopes seemed lost or like certain dramas- blah blah. Just generally they were so patient and understanding. Theyre so kind towards me so PLEASE how do i show my appreciation towards them if they wont accept any gift thats money-related?