This one was fun (though very time consuming). The initial idea was Snake crate (bad business ideas). Then came glass cage for birds. Spitballed a few other examples. Here’s the original sketch:

Photo reference credits:

• Beaver - Judith Lehmberg
• Lizard - Mark Boulton
• Fly - Stanford News
• Horse - Rachel C

NOTE: Reddit user Captain_Saftey pointed out that my original caption for Spider booties (“I feel like I have 4 left feet!” didn’t make as much sense as 8. I’ve fixed it here. Thanks)