Students can often use basic adjectives, mine are particularly fond of using ugly to describe me, but the English language is rich with exciting and useful adjectives.
Adjectives, The Bored Game is a great way for your students to practice using adjectives to describe people. If they roll a 1, 3 or 5 they move one space and produce the structure "She is..." (the adjective they use depends on the letter on the square they land on). If they roll a 2, 4 or 6 they produce "He is..." (depending on the square they land on). As an added twist, they can move an extra square of they roll a 6 or move back a square if they roll a 1 (after producing the structure, of course)!