But, I don't appear to have a very strong (if any) gravitational field. Neither does a piece of tnt to my knowledge. Large bendy things (palm trees for example) don't seem to bend towards each other either, so it's not just tiny things that seem to not have a field.

Perhaps you are saying that, like a piece of tnt, I am merely a piece of a giant ball that has gravity. Like the tnt, myself and the rest of the planet pieces are all acting as one thing, and our masses combine in such a way as to have noticable gravity. Such would explain why less dense smaller planets have less gravity.

But, if this is the case, do objects in space tend to clump together? For example, on a trip to the moon (or mars), would free floating objects tend to group together?

If they were already grouped together, would an astronaut be drawn to them? So like, given time...We'd just have a big clump of space toys bundled loosely together?

Also, what are the lotto numbers.