Had to think about this for a while... since living in Aus I've tried to avoid buying too much stuff without a purpose, for that day when I move back home to Blighty... But then I remembered - patches!
I started collecting them on a trip to NZ about 10 years ago, covering this jacket until there was no more room. I still try to pick them one wherever I go.
Here's a list of what they all are, in case you're interested (working L-R from the top to the bottom):
Bristol (UK)
Mt Stromlo Observatory, Canberra (Aus)
Parkes Radio Telescope, Parkes
Salisbury Cathedral
Siding Spring Observatory, Coonabarabran
Canberra, ACT
Transalpine - NZ
Sydney
Christchurch
Tree top walk, WA
Avebury
Canberra Space Centre
Dog on a Tuckerbox
Manly Beach
Perth
Rainbow Junction, Kalbarri
Heralds Museum, London
The Cotswolds
Australia
Anne Hathaway's Cottage, Stratford upon Avon
West Mercia Scout Camp Millennium Camp
Dolphin Encounter, Kaikoura
Cymru
Conwy Castle
Queenstown, NZ
Milford Sound, NZ
Te Anau, NZ
Battle of Bosworth Field
Royal Flying Doctor Service
Uluru
Aus. International Air Show 2009*
Victorian Space Science Centre
Skipton Castle, North Yorks
Chester Cathedral
Rotorua, NZ
Erlunda, NT - Outback Aus
Ningaloo Reef
Monkey Mia
Penticton, Canada*
Mt Ebernezer, NT, Aus
50th Anniversary of human spaceflight
Yuri's Night
Exmouth - Ningaloo Reef
(* these were pressies - haven't actually been to these places)
So there you go :)
Link to 30-day challenge:
http://365project.org/discuss/general/6112/30-day-challenge