If you just feel the need to do something, go for it. If you feel you want to do something for someone else, just because, Go Big! So let me just preface this with, “just thinking about it don’t cut it.
Maybe you send flowers to grandma, maybe you give $20 to the guy collecting bottles in town, maybe you buy your co-worker a cup of coffee on your way in, maybe buy your granddaughter a princess outfit and tell her if she hits Daddy hard enough he’ll start to grow a unicorn horn. If you’re going to do something nice, make it memorable for them and you. Don’t ask for or expect anything in return. Just go make a difference.