Persuant to a discussion a while back about watering cans for seed pots, I
found something on eBay which I can actually recommend:

http://ebay.com/itm/400124880017/…

Yes, truly, they are little plastic tips that screw on to soda bottles.
Don't snort in disbelief; the ones for fine watering work extraordinarily
well on seed pots. I wouldn't want to use one in a nursery - the thing is
only about 1"/2.5cm across, so not built for volume or speed - but it seems
to be able to water the finest seeds without the least perturbation of the
surface. You do have to squeeze the bottle to get it to flow - it isn't
gravity-fed; but I actually love the thing.

How times have changed. When I owned a nursery I would have chuckled
patronizingly at the thought of using one of these. Now not only do I do
that, but I'm down in the basement cutting vinyl blinds into plant tags.

Ellen