Curried Crab on Crackers

1 8oz tub crabmeat
2 Tbsp mayonnaise
1 Tbsp lime juice
1-1/2 tsp mild curry powder
2 green onions, finely chopped
24 water crackers
12 red grapes, halved

Fold together crabmeat, mayonnaise, lime juice, curry powder and green onions.  Top each cracker with a bit of crab salad, then garnish with a grape half and serve.