doohickey

例句：

1. 1. He found a doohickey in his pocket that he didn't remember buying.
   他在口袋里发现了一个他不记得买的小玩意。
2. 2. The doohickey was so small that it could fit perfectly into his hand.
   这个小玩意太小了，可以完美地放进他的手里。
3. 3.She kept her doohickey hidden in the back of her drawers.
   她把小玩意藏在抽屉后面。