30 ml is a small packaging, but that also means you can take it in your carry-on when traveling. A Jil Sander eau de toilette could work well for a number of occasions.
From Amazon
Jil Sander Sun Delight Femme/Woman, Eau de Toilette, Vaporisateur/Spray
Cosmetify
Jil Sander Sun Delight Eau De Toilette 30ml