Wow Kali, Thats a lucky break, must've slithered in while you were distracted and got closed in! So glad you found it, cheeky little sod.
Our Darwin escaped when it was really small, I checked him late one night when I was really tired, went back to bed thinking id closed the lid properly. freaked out when he was gone next morning.
took our youngest to the school bus quite upset and got home resolved to tear the place apart! luckily I found him within 10 minutes, hiding in an old cardboard box with videos.
could have so easily overlooked a snake so small, wouldve been a nightmare trying to find him inour house too (messy)