An extremely useful spreadsheet, to create your floral recipes for each client's wedding so that you can keep your costs under control and not overspend! Plus, you can log all your wedding bookings and payment activity on here too. 
Don't guess how much you'll need for a wedding, that's when you lose money! Use a useful tool like this, to recipe out all your designs, so that when it comes to shop for your flowers you know exactly what you need. Having a tool like this, rather than a traditional 'pen and paper' option, helps you quickly make changes and calculate amounts, as the formulas do the work for you!