Here are several ideas:
Here's an easy one with instructions:
Here is a pretty farmhouse style potting bench diy video:
This one looks fab
All you need is 4 chunky pieces of wood for the legs and something like Scaffold boards, cut to length and screws to fit it all together.
Here are some nice ones:
You can make it simply from legs and plywood or convert a piece of furniture, like a thrift store or yard sale find - maybe even from side of the road. Just make sure that you put a finish on it that will withstand elements. I would recommend marine varnish.
Here's a video that might help - https://www.youtube.com/watch?v=PLnx8G-hBJg
I’ve seen several fantastic ideas here on Hometalk. If you search them using the search bar at the top left, you’ll get loads of inspiration.
I used a old bbq and took off the oven piece and add Ed wood for the place to work on and it works great it has wheels to .