For someone who likes flying, either as a pilot or a passenger then a custom caricature for their birthday featuring an aircraft is perfect.
Here is a fun caricature from artist Darius, also showing the reference photo.
Included is birthday wishes wording and he is wearing the shirt of his favourite sporting team.
Also featured in a signpost that has all the places he has visited.
What better idea for a 40th (or any age) birthday gift. Art is delivered digitally ready to print (you can nominate size) or we can arrange printing for you.
http://www.caricatureking.com/darius-samples.php