That's a good idea!

You can grow beans in a growbag as well.

And don't forget some things you can grow in a hanging bag..usually found in garden centres or £ shops.... like strawberries etc. cherry tomatoes are also good they get good circulation being up in the air and easy to get at no need to stake just let them tumble. Just need to make sure they don't dry out. Tumbling Tom is good

Dwarf runner beans Hestia, dwarf french beans Purple Teepee and Kenyan Safari are great in pots and need no support. You could grow a climbing french bean, Blue Lake is good and use either cane sticks or an obelisk to support the plants. The more you pick the beans, the more they grow!

Courgettes and squashes can be grown and left to scramble across the patio or try Trombocino courgettes and Festival squash which will both climb. These would look stunning growing up an obelisk. Defender is a good courgette variety that never fails to deliver tasty courgettes.

Look for some of the dwarf varieties are good for growing in containers....