Dog
Transporting a dog requires substantial logistical consideration. Airlines charge between £75-300 for canine passengers, assuming the destination country permits entry without extended quarantine. Many hotels maintain strict no-dog policies. Public transport regulations vary by jurisdiction, with some systems requiring muzzles, others demanding carriers, and several prohibiting dogs entirely. The dog cannot be folded, compressed, or stored in a handbag. A spontaneous weekend trip to Paris becomes a complex negotiation involving kennels, trusted neighbours, and considerable guilt.
Umbrella
The umbrella represents a triumph of portable engineering. Compact models collapse to approximately 23 centimetres, fitting comfortably in briefcases, handbags, or coat pockets. Weight typically ranges from 200-400 grams. No country requires quarantine documentation for umbrella imports. No hotel has ever refused accommodation based on umbrella ownership. The umbrella travels internationally without documentation, sleeps in overhead compartments without complaint, and never requires feeding upon arrival. Its portability approaches the theoretical ideal of 'completely unobtrusive when not deployed.'