Plantable vege patch. Great idea for imaginative play. Use a box with some felt or package filling and then 'plant' your veges. IKEA have great felt veges for this activity. Prompt words - 'in' 'push' 'carrot grow'.
DIY Sensory Blocks - a wonderful sensory toy for your little one, but wouldn't they be GREAT in speech therapy? Close your eyes, touch, now describe how it feels. Use your best vocabulary words for describing!