doing wood working outside — saw horses

If your wood shop is truly tiny, then there may be advantages to working outside sometimes:

If you're able to wheel your power tools outside, you can get much longer infeed and outfeed distances.
- Regardless of what saw you use (whether hand tool or powered), I prefer to do the initial break-down of lumber into smaller pieces, outside, before bringing them into my tiny wood shop.
In some situations, you may prefer to do dust-creating operations outside. (e.g. if your wood shop is inside a residential/living space)
In some situations, you may prefer to use noisier equipment outside. (e.g. if your wood shop shares walls with a neighbor's residential/living space)

But there are some disadvantages too:

Unfavorable weather will prevent you from getting your woodworking done, in a somewhat unpredictable manner.

specific tools I'd like to buy, for outdoor use