This fragrance from Escentric Molecules could work well for a number of occasions. 100 ml is a small packaging, but that also means you can take it in your carry-on when traveling.
From Selfridges
Escentric Molecules Molecule 01 + Guaiac Wood Eau De Toilette 100ml
John Lewis & Partners
Escentric Molecules Molecule 01 + Guaiac Wood Eau de Toilette, 100ml
This product is also available at 2 unverified stores.