This is the magic spot.
Where objects fall, but they don't fall on the floor, because they stuck on the baseboard itself.
So even if you look underneath the shelf, you wouldn't see them.
Frustrating.
So frustrating! Reminds me of a set of keys that went missing in our apartment many years ago. Searched everywhere! Days later, DH leaned back in in the recliner and pulled the lever to extend the footrest. When we heard that metal on metal drop, we both jumped to see the keys on the ground. Yes, we’d searched the gaps in the cushion. I’m convinced aliens took them and pranked us by returning them at the moment we found them.