good for shade are
pumpkins
cucumbers
grapes !
peas
beans
choko !
passionfruit
a wanted ad for old roofing iron <---- this WORKS like you wouldn't believe !!
Oh, and you can turn the hose on to their favorite dust bath holes and spots which will sink in and cool the soil and they'll enjoy their dust baths a whole lot more, because it is cooler, which is the point of bathing in the heat.
it is not so much about the bathing when it is hot it is about laying around on cool ground. Otherwise it's like a swimming pool full of hot water in the sun(burn).
(1) Lots of shade. this is the primary necessity, trees do it the best but you can do it artificially read next bit.
(2)...