A neighbour has recently had a lot of shrubs and laurel cut down. The
intention is to burn it.

Not wishing to buy a dustbin incinerator for what would be a kind of one off
job, does anyone have any ideas on how to make a simple kind
incinerator/grill (the basic idea i suppose is to get the air in underneath)
thing to make the bonfire burn better.

He has some spare concrete paving bricks as a starter. Any suggestions?