Pepper propagation box

Peppers need a very warm soil in order to germinate, so we usually build a box with a heater or some light bulbs in the box. The box needs to be insulated so I insulated my box with wool, of course. I used unsustainable styrofoam for the lid lid that goes on top.
We are growing aji dulce peppers, 3 different types, and a few of the heirloom peppers New Mexico State University got out of the national seed bank. And yes, my peppers will be late this year. I should have planted them about Christmas.