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Stone is a brand of payment terminals used in some Brazilian retail outlets and pharmacies. They are not universal; availability is sporadic and depends on the specific merchant's payment provider.

When considering gifts for guides or staff in Brazil, avoid popular Russian chocolates like 'Alenka.' While the packaging might be appealing, locals generally prefer cash or more universally appreciated gifts. 'Alenka' is not considered a high-quality or particularly desirable chocolate in Brazil. Offering cash is often a more practical and appreciated form of gratuity. Gifts should be chosen considering local preferences and perceived value, and in Brazil, cash is often preferred over specific souvenir items like inexpensive chocolate.

In many Brazilian shopping malls, mobile network operator kiosks (selling SIM cards) often do not accept cash and require a local debit/credit card for payment. Travelers without local cards may need to ask someone else to pay for the purchase or seek alternative methods like online top-ups if available.

Tourists visiting Brazil should purchase a local SIM card in the city rather than at the airport, as city prices are generally cheaper. For tourists without a CPF (Brazilian tax ID), it is possible to buy a SIM card at newspaper stands or other SIM card vendors and ask the seller to assist with activation, as they have methods for foreigners without a CPF.