@ShaulaEvans Krugman links some research.
https://web.archive.org/web/20241129113941/https://www.nytimes.com/2024/07/02/opinion/tariffs-trump-china-taxes.html
Importers are obviously front-loading all their imports as fast as they can: https://www.msn.com/en-us/money/markets/us-import-cargo-to-surge-amid-potential-port-strike-tariff-hikes/ar-AA1tTocL
I have a hard time imagining anything worth stockpiling on your own. Definitely don't buy anything unless you're positive you were going to buy it anyway.