Great with courgette mixed with onions. They make me feel like I'm having one of my five a day .. Plenty of salt on them to encourage the water out first mind or they'll explode.
Veg Pakoras - I use courgettes, onions, potatoes and peppers...also I put in crushed seeds of coriander, cumin etc
Not sure about oversize bhajis though pal can be stodgy inside if they are too big