Instead of eating a sandwich, just put it straight in the bin to save time on digestion.
Extend the life of your courgettes by keeping them in a condom for freshness.
Make a gallon of tea and freeze it, then reheat it whenever you fancy a cup of tea.
Rubbing your eyes can simulate the effect of fireworks and help you save money on fireworks.
Save space in your suitcase by writing 'Ghoulies' on it in white paint to easily identify it.