OK, I'll admit I didn't read ALL of the above replies, but I thought I'd give my take on this.
I USED to be a lawyer, way back BC (before children). It's been a few years, and tax law wasn't my specialty, but...
First of all, you have to remember that those of you who are non-profits under 501(c)(3) are under the category of a group that benefits education. There are several types of groups that can get non-profit status; educational groups are just one of them. However, as your group's purpose is educational and not social services (or whatever category would cover paying funeral expenses), paying for the funeral expenses would be outside the scope of the organization's tax-exempt status.
Providing teacher's gifts, incentives, etc. that are related to the group's purpose is altogether different. These types of expenses would legitimately fall within the scope of the organization's purpose.
As a parent and PFA member, I would also have two other concerns. First, does this expense fall within the bylaws? Our bylaws specifically state that our purpose is to support education at our school, foster underatanding between parents and teachers, etc. We have a clause that specifically prohibits us from lending PFA-owned items to any other organization. Second, where do you draw the line? We've had several children with life-threatening illnesses (cancer); some who have lost parents due to illness or other circumstances; several teachers sick with cancer; etc. It's not our purpose to make donations to any of these individuals to help with their expenses.
This situation came up after Sept. 11th. Some on our Board wanted to make a donation to a 9/11 fund; however, after some discussion, we decided that that was really not our mission. This did NOT mean that it was not a worthy cause! We did organize a separate collection for those who wished to donate something to this cause.
So, my advice (for what it's worth) is to remember the PURPOSE of your organization, and use its funds only to further its purpose. If you wish to support other causes, your school can set up a VOLUNTARY donation/collection system. If you are concerned about tax implications or PTA restrictions, let the SCHOOL (teachers, principal, etc.) handle this, not your organization. Remember that you are stewards of the moneys collected and raised by your group. As such, you have an obligation to use that money ONLY in support the purpose of your group, no matter how worthy.