A time traveller approaches you and tells you that you can gift three items to any time/location in the past as long as it’s at least a millenia ago, do you accept? What do you send back?

Three items that could reasonably be carried in a bag or small cart

They don’t have to go to the same place.

You can bring multiples of an item as long as it can reasonably be carried as one. But it has to be (relatively) the same things. Like you could send tomatoes to ancient Rome, it can be a mix of cherry/roma/beefsteak, but you can’t include other nightshade plants.

Edit to add: notes would have to count as an item. So in the tomato example, if you left tomatoes and notes on how to cultivate them, that’s two items.