This evening we couldn't find the kittens. Searched the house top to bottom and then again. Called their names but didn't hear a peep in return. So we went to the gym to give them a chance to consider life without the rest of their pack around. After we got back Cate opened a drawer then started giggling.
The picture shows where they had been hiding, in a closed drawer in the night stand! The little guys had crawled under the front edge then up between the drawers and the side to lay down in the top drawer. Quite an impressive feat for the critters!