If in doubt, maybe you could purchase a child's pair of pointed Fiskar's. They usually have good size handle holes. I keep a couple of pairs of them that I got at the before school sales 10 years ago for things such as this and they are going strong.

I understand that it is the acid in paper that ruins scissors. I wonder if the plastic has the damaging acid?

Maybe you could tell them what you will be cutting, and if they would like to bring a different pair for the project.
I have other scissors around the house and would prefer not to use my sewing scissors for anything other than fabric.

It is so much better to have one pair that is designated for fabric only and another for paper and plastic, etc. This assures you clean fabric cutting!

I have them all over the house for use on anything anyone wants to cut, but the ones in my sewing room are for fabric only and everyone knows it.

I have several Fiskars scissors and keep them razor sharp with a Fiskars scissors sharpener, haven't found one for my pinking shears yet though.I use the spring loaded ones for cutting "plarn" out of the grocery bags, haven't noticed them getting any more dull than the others.

I was just reading about a group that makes the tissue holders for their church, apparently they have a basket full of them they set out for funerals. Anyhow, they use their seam rippers to open the tissue packs.