Here is the propagation tray and base of 24 plugs from Root It, the ultimate in plugs to germinate or make cuttings. Using these plugs, you'll increase the success rate significantly.
These trays are especially designed to drain all water excess and are made of high impact polystyrene.
They are compatible with most mini-greenhouses and propagators. Moreover the plugs are made with completely organic and biodegradable materials, thus maintaining respect for our environment.
Once you try them, you will not stop using them.