My friend Willie Edwards is an ongoing source of excellent ideas. He posted on his blog some time ago about how to make Sound Absorbing Panels that can help you tame the sound of your recording space, especially if you don’t have an ideal room in which to do your voiceover work.
Now, he’s added a new blog post with two more excellent suggestions of further DIY projects. Thank you, Willie. I so appreciate that you’ve found and linked to these excellent resources.
(edited to fix typo)