Very nice story.
We have non religious guests over, and we even had non-Jews over this year for the first seder (Shabbos, avoids any issues of cooking on yom tov for a goy). I told them that if they wanted to bring something, they should just bring themselves and a willingness to read in English parts of Magid.
We’ve had so many issues with people not knowing. Even if you give them explicit instructions in terms of what’s acceptable, they still don’t get it 99% of the time.
I serve dessert at the seder for those guests who find macaroons and jelly rings an integral part of the Pesach experience, but I do explain that they shouldn’t fill up, since we have to eat the Afikoman with an appetite, and I tell them we’re not permitted to eat anything after the afikoman.
There’s a lot you can do with bananas for Pesach.
We made banana pancakes this year, a recipe that involves just bananas, eggs, vanilla, a little sugar, and whatever other goodies you want to add. There’s also Yonanas Ice Cream, a perfect natural, parve treat made from just bananas and whatver flavors you want to add. Good item for Pesach all around.