General need advice on building an outside play area/garden for the piggies!

[Aniimaru]

Aloha guys!
So, I've been blessed enough for a neighbor to let me use her garden to do whatever I wish with so it is pretty big. I'd like advice on what I definitely should plant for their garden (I know for sure: lettuce, zucchini, carrots, celery, edible pod peas, summer/winter squash, basil, tomatoes). And their outdoor play area for exercise (will only be there for a little while to get run around in an enclosed area while i tend to their garden most of the time) what should I put in?

This is most of the garden I am referring to if this helps:

 

[spy9doc]

I recommend adding green bell peppers, green beans, radicchio or red cabbage. Regarding celery, once it starts to flourish, it puts out leaves like crazy and they are one of my boys' favorites. You don't even have to harvest the celery until you're ready.......just cut the leaves off for them.