And while the teachers might convince themselves that they reward kids for using cheap stuff creatively, I'm in the schools enough to know that is most certainly not the case. The teachers reward the kids for having jazzy looking projects. Yes, they need to incorporate the intellectual content appropriately no matter how they do the projects. But the nicer-looking projects, where it's clear the parents have dropped some $$$ at Michaels inevitably score better than the ones where they have not.
DD10 has had a couple of teachers where this was true - the child whose parent's spent the most money and basically did the project for them got the highest grade. But she's also had a couple of other teachers where they really did care about the work the CHILD did and have actually gone out of their way to praise the children who used what was on hand in creative ways instead of just running out and buying something. Thankfully, DD10s last 2 teachers have fallen into that latter group. My daughter has some struggles in school due to a slight learning disability, but has a real talent for drawing and painting. When it comes to projects, I have her draw pictures instead of just printing out something she finds online because (1) her drawings are truly good and she learns so much more by doing them and (2) I don't have to waste the printer ink

We have a dress up project coming up, and I know her teacher has said over and over that students should just make due with whatever things they can find around the house. She did mention once that renting a costume was possible, and obviously that wasn't prohibited, but it wasn't what she really wanted the kids to do. How did my daughter interpret that? "Mom, we've GOT TO go rent a costume!" LOL