Definition of Motif
There is a motif throughout the play of the characters being described as acting automatically or mechanically, as if they are going through prescribed motions or as if they are more machine than person. For example, Ruth criticizes Walter for smoking before breakfast, saying so in a way that is "too automatic to deserve emphasis," whereas Travis makes his bed "stiffly" and "mechanically." Hansberry’s recurring descriptions likening the characters’ actions to machines highlights the quotidian nature of the Youngers’ morning routine. The morning that is portrayed at the start of A Raisin in the Sun could be (impending insurance payout notwithstanding) any other morning, just another day filled with school or work.
Throughout A Raisin in the Sun, as the title hints at, there is a motif of sun and sunlight. This motif is most clearly evident in the recurring symbol of Mama’s little plant, which she cares for in part because it is the closest thing to her dream garden that she can have in the apartment. The plant survives with the meager sunlight available on the window sill of their apartment, but the play’s conclusion promises the garden of Mama’s dreams. Not only does the house she purchases have a small yard, but the Youngers buy Mama gardening tools and a hat.
Unlock with LitCharts A+Rats and rat traps are a recurring motif in A Raisin in the Sun. Mama compares the apartment to a rat trap in a particularly poignant metaphor:
Unlock with LitCharts A+Ruth: Well, Lord knows, we’ve put enough rent into this here rat trap to pay for four houses by now…
Mama: [...] "Rat trap"—yes that’s all it is