Another set of eye works generally, even when the item is large and was deliberately set down somewhere in the shop!? I showed up at the shop of a friend just as he was searching high and low for some item he'd put down. He described it and I found it on a counter within a couple minutes.? He'd just developed a mental block and was looking where it wasn't.? I had no such prejudice.
This is also why books need editors.? The author just reads over his own errors.