What would you grow in a phone box?

No I’m not joking! I really want to know what would you grow in a phone box?
Because we don’t have much to do at the moment ( if you can’t hear the sarcasm, there’s something wrong with you    ). Bob has had the idea of turning our village phone box into a greenhouse attraction for locals & visitors. He’s already been onto BT phone box department. As we thought the phone is no longer in service. What we didn’t know was charities or parish councils can buy the phone boxes. Bob has also had a mothers meeting with the village hierarchy     , they love the idea. Next step is asking the local charity organisations if they’d be interested in purchasing the phone box, for the pricy sum of £1.  Fairly high chance as they’ve just announced a grant for up £1000 for gardening projects to improve local villages/ towns. 
Bobs idea, guess who’s going to end up doing most of it   . It is actually a really good idea. But his timing sucks. 

Anyway plant for a phone box. They will have to be in pots as it’s got a concrete floor. All the glass is still in it. Not got a door at moment. But we know where it is. We were thinking a locked door so nothing gets damaged and it’s stop the door getting damaged in bad weather again. Most phone boxes on mull all look vandalised because doors are missing or hanging off. But it’s the wind, that does it. Obviously whoever (probably me) is looking after the plants will go in daily to water and do whatever needs doing. 


Suggestions please. Thank you