Recycling, reusing and re-purposing plus making something you need is great. I like this because I can have a jug with water and plant food plus one with just water. My old watering can developed a few holes (someone put a few pellets into it but no confession yet). All you need is: milk jug (or other plastic jug with cap) large needle lighter Use the lighter to heat the needle (gloves help save your fingers), poke needle though the lid (from the inside out). Heat the needle for each new hole. I got a little over zealous with the holes the first time so start with a few holes and then add more, if needed. I have seen posts of people using nails or a really small drill bit to put holes in the cap but the water stream could be to strong especially for seedlings, experiment to see what works for you. Milk jug caps are a softer plastic and easier to get the pin through but you can use water bottles or other plastic containers.