Metaphors

A rainbow of flavours - a variety of unique choices to pick from

As blind as a bat - unable to see

As quiet as a mouse - to be really quiet

Chain reaction - a chain of events which is self-amplified

He is all heartbroken - he is very sad

Keep your eyes peeled - pay attention and watch everything closely

Love is the air - love keeps you going

She has a heart of gold - she is a great person

As wise as an owl - the ultimate symbol for wisdom

Her voice is music to his ears - this implies that he feels happy each time he hears her voice

She has the heart of a lion - she's brave

You are the sun in my sky - you give me hope

Apple of my eye - this means that you cherish someone or something above all of the other people in your life

As smart as a fox - very smart

Honesty is the best policy - you should always tell the truth

SOURCE 1  SOURCE 2

Metaphors in Lithuanian

Lithuanian language has very beautiful metaphors, they are very common in literature (especially old medieval literature) and not so common in nowadays' spoken language (takes a highly educated person to use metaphors when speaking in Lithuanian, our vocabulary is mostly very casual)

Old examples:
(translations in bold)
1. 'Verkia duonytė tinginio valgoma.' A small slice of bread is crying being eaten by a lazy man
2. 'Seno vilko neapgausi.' You can't fool an old wolf

3. 'Melo trumpos kojos.' Lies have short legs
4. 'Mokslo šaknys karčios, o vaisiai saldūs.' Roots of education are bitter, but fruits are sweet
5. 'Žodis skaudesnis už lazdą.' Word - more painful than a cane
6. 'Tuščias puodas garsiai skamba.' Empty pot clangs loudly
7. 'Nekišk nosies kur nereikia.' Don't put your nose where it does not belong
8. 'Baimės akys didelės.' The eyes of fear are big 
9. 'Vilką minim – vilkas čia.' Mention a wolf - and here it is
10. 'Naktį visos katės juodos.' At night all cats are black