Here are some cool designer indoor and outdoor furniture to download.
3ds format though. You can use any converter.com to convert to FBX. I use it a lot.
The photo below shows some items I have downloaded for IC7.
I hope you enjoy these free links I have been searching for and through.
I thank God for helping me.

Air-Chair - Magis (magisdesign.com)

3DS to FBX Converter Online - AnyConv