Get your kids into gardening. Let them pick out their favorite vegetables or flowers, as either seeds or potted plants. Larger seeds are easier to handle. Have kid-size tools and work gloves that fit them. You can get them involved in weeding, but be patient while they learn the difference between weeds and seedlings. Let the kids get dirty and investigate bugs and worms. Avoid pesticides, especially where they garden. If you don't have space for an inground garden, plant in containers.
Rejuvenate your container garden. Check the containers used last year. Some may need to be replaced if they're cracked, or if the plants growing in them dried out too quickly (plants in plastic or glazed ceramic containers usually need water less frequently). It's good to refresh the soil, but you can save money by replacing only the top half. This works for most plants. If you have the urge, but you think you have little or no space for a container garden, you only need a deck, balcony, patio, front step or even a windowsill. Containers should have enough holes in the bottom to allow excess water to drain. Choose plants with the same light and moisture needs. Arrange plants in container so there's enough room for growth. Add soil, and water well.