I need carpet remnants, etc. Where may I be able to find free or inexpensive materials for this project?
Including wood, tubes, and other miscellaneous. I realize it will cost some money on my part, I am just being economical, plus the kitties will never know of their "low-income housing"

go around to a carpet warehouse and ask for cut-offs, or those big rubbish tips outside peoples houses etc.
or look out for verge pick-ups in your local area and things like that

hope it helped!

previous renovating experience

Many cities have stores (check Lowe's or Home Depot or a flooring store) that will sell warped wood and end rements of carpet cheap. While you are driving around town, stop at construction sites and ask if they have any wood rements that are garbage that you may have. If none of those are available, check online to see if your city has a Freecycle group. Freecycle members post items that they no longer want or need, other members can request the item and receive it for free. You are also able to post a wanted ad for items that you would like to receive. pets question and answers,www.5d2d.com

Good luck with making your kitties a new playground!

Freecycle member
Frequent DIY projects
Pet owner for 25 + years
Cub Scout leader