Always have a sample or a small bottle of perfume in your bag, your car or your desk! I completely forgot to spray on perfume yesterday and I was very sad :).
You can get samples from perfume stores, buy online, get them as presents in magazines or buy spacial gift packages that include also a miniature of the fragrance bought. Also, in sephora, douglas, dm, marshall’s, ross, TK Maxx, TJ Maxx, you can find roll-ons and minitarures from burbberry, chloe, calvin klein, tommy hillfiger. Also, Victoria’s Secret sells their fragrances in roll-on vials.