Let me break this down for you since gift-giving can get a bit confusing! I've found a few things worth noting after playing for a while. For abigail, amethyst from the mines works great, and she actually loves regular pumpkins too (not pumpkin pie like some people think). Elliott's pretty straightforward, he's really into lobster, duck feathers, and pomegranates, which is nice since you can get those fairly reliably.

Now emily's interesting because while she definitely loves cloth and wool, and gems like aquamarine. Harvey's a bit particular, coffee's good for early game since you can grab it from the saloon.

For leah, salad is your best option since you can purchase them in bulk from the saloon. Penny's got some misconceptions going around too - those diamonds and emeralds people recommend? They're just liked gifts, but melons will get you much better results. Oh, and careful with poppies, they might seem nice but quite a few villagers actually hate them! Got beer? Throw them to pam and shane, they love it! Have excess spicy peppers? The mayor (lewis) loves it.

One thing that's helped me out, most artisan goods work pretty well for most folks, but definitely keep them away from the kids. Jas and vincent aren't fans at all, which makes sense when you think about it. And if you're looking for something that works for everyone, gold pumpkins or a rabbit's foot (except penny) are pretty solid choices. Birthday gifts are still eight times more effective though, so definitely worth planning those out!