drill holes in bucket along bottom corner, then again 10 inches up.bury the bucket so top holes are just above ground. fill bucket with compost and put water in it every 2 days or so. self watering and fertilizer for your tomatoes!
Chances are you& have a bottle of tomato ketchup in the cupboard or fridge. Many of the bottles are now the plastic squeezy type. Rather than simply popping the empty bottle in the recycling bin next time you finish a bottle why not have a go