Carolina Wrens Nesting in my Yard

I found baby Carolina wrens nesting in a Trash bag in my garage. I had stuffed one in my gardening area inside a pot. It seems they would be SO hot in there? We made an effort to keep the garage door open, but it surely is hot in the garage as we are in the 90's already here. Regretably the male is deceased and she is on her own raising the nestling. My husband accidentally killed him as he fled under the garage door and he was closing it and he got crushed:( BOO_HOO
I will surely make sure to put up some wren boxes next year. Nesting in the garage, I do not know if this is a good idea? I am not sure if leaving the garage door cracked will give the bablies enough light for their eyes to develop properly. Does anybody know??

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You can have it printed on any medium and mailed to you. Some are perfect for a little boy's bathroom or a babies room. Right now I have mermaid's, dog's and birthday cakes. I will be adding more soon. If you have a certan item in mind for your babies room please let me know. I can customize it with your babies name or toddler. See this link. Thanks!!