Tin

What do my dream about Tin (pewter) really mean?
Dictionary of Dreams - interpretations of dreams about Tin (pewter) & meanings of dreams about Tin (pewter).

Tin
To dream about tin symbolizes a strengthening of your brain power. You are expanding your horizons and welcoming new adventures.
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Tin
Seeing tin in your dream represents mental and intellectual expansion. You are broadening your mind and opening yourself to new experiences.

Alchemically speaking, the Jupiter symbol is reflected in the material form of tin. Tin is an alchemical symbol representing mediation and a balance between hot and cold (situated between Mars/Iron and Saturn/Lead).

with, stand-in, stopgap, sub, substituent, substitute, substitution, succedaneum, suggest, suggestive of, superseder, supplanter, supposititious, surrogate, swindle, symbol, synecdoche, synthetic, take after, temporary, tentative, third string, tin, ...

To dream of rust on articles, old pieces of tin, or iron, is significant of depression of your surroundings. Sickness, decline... Continue dream interpretation - Rust"continue dream interpretation
Rye
Dream interpretation - Rye ...

I was washing my legs in a tin bin my granddaughter (age 3) was standing next to me watching...I told her she was next to take a bath in the tin...while I was washing my legs I noticed the bottom of m...[More of this dream] ...

CHARIVARI: A mocking serenade of dissonant noise created with kettles, pots and tin horns and done in an attempt to annoy. These events usually took place when an older person married a very young person.

Rust
To see rust forming on iron or tin, signifies neglect or old age. It is also indicative of depressing surroundings, characterized by a decline in fortune and false friends.

The sardines are a good and strong symbol which clearly express the dreamers real life emotions. He feels suffocated just as sardines in a tin.

A trailer park also has a hint of compartmentalization - everyone in their own little tin can. There's more of this in your second dream.

See also: Dream, Dictionary, Symbol, Dreams, Need