Here are some episodes in Finnish, by Kristopher and Patchi:
Episode 001 - Hamtaro
Episode 002 - Kerhotaloa rakentamassa
Episode 003 - Täydet pisteet
Episode 004 - Bijoun vierailu
Episode 019 - Pandan huvipuisto
Episode 020 - Snoozerin mysteeri
Episode 021 - Rohkeutta Cappy!
Episode 022 - Pashminan lahja
Episode 023 - Maxwellin suuri skuuppi

Here are a few episodes ripped from VHS, credit goes to Puhumme-Suomea:
Episodes 001-005, 011-012(Folder)

This is the first Hamtaro movie in Finnish donated by Eewyi!
Hamtaro elokuva! Seikkailu Ham-Ham maassa > Video | Disc Image