Some of my favorite ways to incorporate edibles into a garden are :

1. Espalier - method of growing fruiting trees in a flat plane - perfect for growing along the perimeters of your space, next to fences and/or walls. This method takes up a much smaller footprint than a conventionally grown fruit tree but still produces heavily. Also, it's a lovely design element for any space. *(there are trees that have been grafted with multiple fruit varieties, sometimes called "Fruit Salad" trees. These are great because you can have a wider variety of fruit all in one tree. Genius for the smaller home gardens! Pricing I've seen around $100+ but to get oranges, tangerines, grapefruit, lemons and limes all on a single tree - priceless!)

2. Incorporate edibles right into your existing landscape. Tomatoes, peppers, cucumbers, green beans, lettuces/greens, herbs...all can grow happily mixed in with your other plants. Use vertical supports like trellising or tuteurs to create height and interest and save space to boot.

3. Container gardening - almost all edibles have varieties that can successfully be grown in containers.

Happy gardening!

I agree with and practice all your methods busyone! I also plant edibles in containers, beds with flowers, and other unique places to incorporate edibles into the garden. While shopping for one of my clients I saw an espalier apple tree with 6 varieties grown on one tree. There are so many choices for smaller cultivars of fruits and veg now.
Great tips....Happy gardening!

Check out my listing under my project Mediterranean perennial for ways to grow edibles among perennials and container plantings