What type you like? #slowly brewed coffee. Larger is better, longer lasting.
Ah, use the right Stamp in that penpal letter, via @slowlyapp@twitter.com "Slowly" app? Currently on Sale, 20% off. 80 coins, about 2 CAD for the 6 stamp set. Regular, 100 as shown.
Pretty cheap compared to a Canada Post international mail letter which is over one dollar (it's been ages I haven't sent one) each.
The slowly stamps are decorative, reusable ad infinitum, and just plain fun. Great app!
https://getslowly.com/en