There are all sorts of gifts for dad on Father's Day -- shirts and ties and books and coffee mugs and golf balls -- and many of us have already spent money on the stuff we can wrap up and deliver or mail off to dad on this special day. But some gifts -- the ones we can't wrap up -- have an appeal that is priceless because they focus on the moment, they build relationships, and they promote mental and physical health. And here are just seven simple but everlasting gifts to consider sharing with dad on this Father's Day.

There is valid concern regarding cancer-causing chemical pesticides used around the home and in the backyard vegetable garden. For the garden, many pests are drawn to unhealthy soils and plants, and as a result, the need for pesticide application increases to control damage done by garden invaders. However, if you keep your garden healthy, and implement the practice of companion planting, you might be able to reduce your use of toxic chemical pesticides to zero. Companion planting is the practice of growing plants close to each other that utilizes each plant's ability to protect the other plant by attracting beneficial insects and repelling harmful ones. Gardening organic is a satisfying cancer prevention way to get fresh vegetables to your dinner table.

For example, the Three Sisters gardening practice of North America Native Americans is organic and practical. Corn, squash, and climbing beans are grown close together. The corn provides a natural pole for the beans to climb, the beans provide needed nutrients for the soil and the squash acts as a spreading ground cover choking out weeds and protecting the soil from drying out too fast. A fish is planted in the soil to provide a natural fertilizer.

Yayasan IDEP Foundation offers a comprehensive companion planting chart, including an extensive list of tips on natural insect repellants for ants, aphids, cabbage butterfly, mosquitoes, moths, red spider, fleas, flies, slugs, snails and more -- to use around the home and to grow in your garden and yard. Available as a free PDF document, you can download the Companion Planting Chart here.