We sow springs, etc in small trays, and carrots in a bucket with drainage. As DD will tell you, peas are better for being chucked in, preferably at night, and lobbed over the shoulder, and as Pea God, he should know...
I'll try a few leeks in the buckets this year, and let them get on with life in a long watering tray!
BTW, Dev, re pots, just check out Ebay as they have thousands of ideas for you to choose from. Over the last eight years, we've bought a collection of small square pots, which fit in their own trays, and at fifteen per tray, they're perfect for starting off most veg! At 6gm per pot, they're pretty flimsy, but when they're all snug, they all lock up into a very manageable system, and we haven't lost a single pot in all that time!
I'm all for gardening this way; we just can't keep up with the heavy labour like we used to, but here's the perfect antidote to indolence...
Nice one Goosey!