Currently 1 USD can buy around 0.88 EUR which is historically quite high (a few years ago it used to be 0.6-0.7). I live in The Netherlands and therefore use euros as a day-to-day currency. Now that the price is high, I guess it would be kind of smart to sell any dollars you have laying around and get euros for it.
When the price is low, it would maybe be smart to buy dollars or buy products priced in dollars (such as on ebay or amazon for example).
Are there any tips regarding what I could do when the dollar price is either high or low other than what I mentioned and given that I don't want to buy stocks but want to have something physical/tangible such as actual dollar bills, or products purchased online? For example currently I have about 150 dollars in cash and I will sell them soon (when the price is around 0.92) but after that I won't have any dollars. What could I do in such a situation?