School shoes. And shoes especially for wider feet. Ok, so they use a bit more material but not that much more.
Train tickets. I would visit my elderly parents far more often if I could afford the trains going 200 miles north. DD went interrailing last year and the prices of train journeys on the Continent were vastly cheaper. I'm talking about journeys outside of her ticket.
Buses round here, in Hertfordshire. Cheaper to get a taxi into town if there's more than one person travelling. And the day saver ticket at nearly a fiver is cheaper than a return to town on a 30 min circular bus route. I.e, 30 mins into town and ten minutes home.
Flooring. I've been rocking a Bedouin tent style series of rugs on ny floor as I can't afford to put carpet or laminate down. I would happily buy lino or vinyl but even that is out of reach currently.
I'm sure I'll think of more.