a special permit
article: Cannabis in Estonia Up to 7.5g is considered an amount for personal use, and is punished with a fine. Large amounts and distribution are criminal offenses punishable with a custodial sentence of up to 5 years.
You maybe already asked yourself "Is Cannabis in Estonia legal?" In Estonia Cannabis (or Marijuana) is decriminalized for recreational and some for medical use. About 6.0% of the people in Estonia used Cannabis within the last year.