Kids have been getting treats for Easter for decades before even I was born.

My Dad had an enormous Easter basket as a kid. So it held what many would still see as a ridiculous amount of stuff. And there were Easter books and Easter toys and Easter records as least as early as the 1950s. So giving actual gifts to kids for that holiday isn't new. The type of gifts may have changed, but the gift-giving has been there awhile.
I don't know how summer items are any different than candy, LOL (In terms of giving either of them for a religious holiday.). Except they last longer and are better for people.

I got summer clothes and outdoor toys as part of my Easter basket experience back in the :::coughcoughlonglongtimeagocoughcough:::.

So it's been going on for decades and decades at least.
As for what type of things people consider gifts...I think it's a good thing when a person appreciates small and even practical items as gifts. It's all in the presentation.

That's why countless shops sell baskets of food items for people to give as gifts.

I try to teach my kids to appreciate any gift they receive....even if it's lettuce.