What can I do for my dad to show him some gratitude?

my dad is great. I lost my job and all the savings went away so he supports me financially and emotionally. I wanna do something for him but I don't have a lot of money. and I don't have any ideas. what can I do for him? I mean I can spend some money. I just want it to be meaningful and to say that I love him and stuff. help me out guys!