Here are some different types of environmentally friendly powders for rangoli, along with their corresponding colors and cost-effectiveness:

1. Rice Flour

• Color: White (can be dyed with natural dyes for different shades)
• Cost-Effectiveness: Rice flour is relatively inexpensive, costing around ₹40-₹60 per kg. It’s widely available in local markets.

2. Turmeric Powder

• Color: Bright Yellow
• Cost-Effectiveness: Turmeric is affordable, usually priced around ₹200-₹300 per kg. Its vibrant color and antibacterial properties make it a popular choice.

3. Beetroot Powder

• Color: Deep Red or Pink
• Cost-Effectiveness: Dried beetroot powder can be a bit pricier, approximately ₹300-₹400 per kg, but you can also make it at home by drying and grinding fresh beetroot, which can be more economical.

4. Coffee Powder

• Color: Brown
• Cost-Effectiveness: Regular coffee powder can cost around ₹200-₹300 per kg. It adds a rich, earthy tone and can often be sourced from your kitchen if you have leftover coffee grounds.

5. Coriander Powder

• Color: Light Brown
• Cost-Effectiveness: This spice is quite affordable, generally around ₹100-₹150 per kg. It's a versatile option for adding subtle tones to your rangoli.

6. Chili Powder

• Color: Red
• Cost-Effectiveness: Chili powder costs about ₹150-₹250 per kg. It provides a vibrant hue and is easily found in most kitchens.

7. Flower Petals

• Color: Various (depending on the flowers used, e.g., marigold for orange/yellow, hibiscus for red)
• Cost-Effectiveness: Fresh flower petals can range from ₹50-₹200 depending on the season and type of flower. Using flowers from your garden can reduce costs significantly.

8. Ground Green Leaves

• Color: Green
• Cost-Effectiveness: Ground dried leaves (like spinach or mint) can be made at home and are cost-effective, usually less than ₹100 for a good quantity.

Summary of Cost-Effectiveness

Most of these options are affordable and can be sourced locally. The homemade options, like beetroot and ground leaves, not only save money but also allow for customization and creativity in your rangoli designs. By using these natural powders, you contribute to a sustainable practice while celebrating the beauty of Diwali.