Even though Pessach is Jewish holyday that doesn't require any giving of gifts or baskets ( In Purim one is required to give to at least to two people a small basket called Mishloach Manot with two kinds of kosher snacks); Any giving of a gift is always welcome...
Whenever I'm invited for a shabbos to a friend I may give of course before shabat some kosher dessert or wine.
For exemple,this Pessach ( Passavor) I will go to the seder by a dear close friend, therefore I will bring some eatable pessach dessert along with me !
What's the best way to show gratitude for a gentle kind invitation? By bringing a little gift. There's nothing better than showing gratitute to a friendly good deed ( mitzvah).
Good deeds ( Mitzvot ) should always be appreciated, just as friendships shouldn't be taken for granted.
There are a lot of options ! Just be carefull to take something kosher for Passover ! Make sure it has an orthodox supervision ! It's better if you can have it delivered to her home or bring along with you before the sunset, since it's a yom tov.
You can check several options of PESSACH GIFT IDEAS for all prices online ! GOOD LUCK !!! I HOPE YOU HAVE A GREAT TIME BY THE SEDER !
http://www.yossissweethouse.com/store/dept-108.htm?source=gooaw&kw=12d
http://www.koshergiftbaskets.com/index.php?cPath=178&osCsid=e06407a263379a5d037356813e8c6dfb
http://www.apples4theteacher.com/holidays/passover/gift/index.html
http://www.gifts.com/occasions/passover/o10hraicp
http://www.all-that-gifts.com/je/passover.htm
http://broadway2000.stores.yahoo.net/
http://www.kosher4passover.com/
http://www.thekosherconnection.com/miva/merchant.mv?