One of the jobs that I'm not particularly fond of, is cleaning and sterilising my pots. For years I've used the usual 3 inch pots to transplant my seedlings into, but now I'm using what I think is better ... plastic cups.
I bought a pack of 100 for £1.00 in the local discount store - so they work out at one penny or one pence each!
They are deeper than my brown 3 inch pots which is ideal for leggy seedlings.
Slightly narrower in diameter so you can get more onto a tray and they are white.
I think that white reflective surfaces are very helpful when growing tomato seedlings in the early spring, when light levels are low.
I will now use plastic cups - recycle them of course - and not have the job of sterilising old dirty pots each season for my tomato seedlings.