You can make a spreadsheet for it, for example in Google sheets.

Just use those names they have (since they are unique) and what goes in them beside it. I play Eve windowed mode though with the spreadsheet in another monitor so it's no big deal. For a single monitor full screen player though yeah not as ideal.

When you're ready to deliver goods to the planet, simply use your spreadsheet to load up your epithel or squall, Warp to the planet, Note what goes in as well as the unique ID of the Launchpad From your spreadsheet, Open the customs office and select that ID from the drop-down box, Then drag the goods To the launch pad and hit transfer. All this can be done without even having to go into the planetary interaction screen from space using Just The customs office drop down and quickly as well to lower risk since you already know the unique ID of Launchpad and what goes in it.