I received the same reaction from my own children: they absolutely LOVED preparing gift baskets.
This is what we did:
I took a night and went to the local thrift store and picked out gift baskets that matched my children's personalities. (A little basket with a small handle for my youngest daughter, a frilly basket for my eldest, and a rustic basket for my son.) That made them feel like they were actually pouring a little of themselves into the "present."
Then we baked "Healthy Hamantaschen" (the recipe is posted in the Purim section) and went to the store and bought special soaps and other treats to pack into the baskets. We finished the baskets off with homemade cards with lots of glitter and color.
Finally, we each found a special someone we wanted to bless with our baskets. Most people these days are a little taken aback by the gesture. But enjoy and spread the cheer of this wonderful day no matter the reaction, as many Gentiles came to believe in YHVH because of Esther's triumph for the Jews! So to be clear: this is NOT an exclusively Jewish holiday!
Here are some other suggestions for Purim to try:
1. Host a Purim party. See if you can invite one girl (or however many you could manage) who is an orphan/in foster care, and do a glam night where she gets to dress up and be a queen just like Esther! Maybe afterward you would like to mentor her on a long term basis!
2. Bring some special cheer to an elderly person in the area.
3. Bless a child less fortunate with a costume. (Thrift stores are great for costume finds.)
Have a blast. I know we always do!