| Clue | Source | Date |
|---|---|---|
| Sloshy sleep spots | Thomas Joseph | 19 Jul 2022 |
| Sloshy sleep spots | Thomas Joseph | 23 Jul 2019 |
| They toss and turn when you toss and turn | Wall Street Journal | 26 Jan 2019 |
| They toss and turn when you toss and turn | ||
| They make waves when people toss and turn | ||
| People use them only when they're full | ||
| Rest areas | ||
| Liquid assets of a sort |