We are currently researching and building a model of an element. It doesn't have to be fancy - I told students any material would do . . . foam balls, pompom, cereal, pasta, string, old wire hangers, beads, buttons, etc. I also have a limited amount of material available on a first-come, first-serve basis. I just received an email from a parent upset that they spent too much money to complete the project. I don't understand how this miscommunication occured. I (1) wrote instructions down on a paper (with ideas for materials), (2) stressed to students to find cheap stuff at home, (3) said if they wanted to buy stuff, keep the cost under 5$, (4) wrote an email to all parents telling expectations and suggesting they not spend a lot of money, and (5) had supplies for those who needed some. I feel that I have done everything possible to prevent this from occuring, but that doesn't change the fact that a parent did spend a lot of money and is upset. I have responded and suggested they return the supplies for a refund and the student can see me for some free materials. I reminded them that I stressed to students not to spend money and that I had supplies available. I don't feel, however, that I was wrong to ask students to do this type of project (especially with the support I have provided along the way.) Has this every happened to anyone else? I hate the fact that a lot of money was spent - exactly what I tried very hard to avoid.