Re purposing plastic takeaway containers, using a craft / Stanley knife cut two slots either end of the container lid. Take one sheet of kitchen roll and fold in half then trim to width and pull each end into the slot so that the towel will end up on the top after you fill the container with water and pop the lid on.
The water will wick up the towel and will keep your seeds damp so that they can germinate. Do and leave it, no keep going back to spray and water. I'm going to try this method with micro greens so I can trim easily.