If I pick up a hidden item, when the mirage spot comes around again another day, will there be another hidden item (either the same item or a different one)? I've seen this on Serebii:
'With the items, the hidden items only appear one a day and at random between a selection of three. These also will only appear in the area that's indigenous to your game for the day, and not through any found via StreetPass or PassingBy. The Dowsing Machine items available are based on the island type and are as follows'.
This appears to imply that they do, so I need clarity as I have no evidence either way.