I don't have 4th grade girls I'm shopping for, but I certainly saw a wide array of patterned, glitzy and sparkly colored duct tape in the craft aisle of Walmart this week. I was looking for chiffon ribbon and did not find that, but there was an impressive assortment of craft duct tape. Does that speak for how popularly it sells ;0)

same thing wm...throw in some beads, or introduce yarn...also at wm...last year it was colored rubberbands...

Parachute cord and a book of ideas might work for you.

My granddaughter loves it. Has a ton of rolls. She is now in high school and uses the tape for so many things. There are some great books out there. When they used to go camping she would set up a table along the street and sell her items she made. Often made almost $100.00. She was in a craft fair once and made over $200.00 and this was made by items under $2.00 each. It is great to see young kids doing things like this.

I don't think you can go wrong with duct tape. You could also do an adult coloring book with cool pens. My dd and friends love those.

The craft aisle at Walmart has lots of crafts for a 9 year old.