Learn Swedish: Mina fingrar och tår är kalla. - My fingers and toes are cold.

You actually cannot use båda or båda två here! Those words are only used when you are talking about exactly two items total (like two hands or two people). Since you have ten fingers and ten toes, you instead use the linking phrase både ... och ... to mean 'both ... and ...'. So you would say: Både mina fingrar och tår är kalla.

Why do we use mina instead of min or mitt?

Mina is the plural form of 'my'. Because both fingrar (fingers) and tår (toes) are plural nouns, the possessive pronoun must match them. Notice that you only need to say mina once at the start of the phrase to cover both body parts.

Are fingrar and tår regular plurals?

Tår is the regular plural of en tå (a toe), as short one-syllable words ending in a vowel often just add -r. However, fingrar is highly irregular! The singular is ett finger, and normally ett-words never take an -ar plural ending. It also drops the 'e' when it becomes fingrar.

Why does the adjective kalla end in an 'a'?