Obviously some type of melon but too young to identify variety.

Right you are. I popped some. Corn is one thing I dont' grow well, and I didn't pick the cob or see the plant. It reminded me of corn but here in Florida with thousands of imported ornamentals one never knows...

The non-Jade looks like a Haworthia. The Jade plant is a small-leafed (aka compact) Jade. It could be Crosby's Compact. Josh

I am not sure what kind but here is a link to some info on rooting cuttings and it also has tons of pictures of passifloras so maybe if you are lucky can find out what it is there. Hope this helps! Mike p.s. You should show a pic or describe the leaves because passifloras have different kind of leaves. Here is a link that might be useful: Passiflora cuttings