This is a very quick and simple solution, and I mainly used materials I already had on hand. However, I think it provides a great baseline for you to create your customized version of a garden workbench & sink.
Step 1: Materials and Tools
plywood (mine is 28" x 36" and Made in Texas)
2x4's (mine are 4 x 28", 4 x 33", 4 x 38" and Made in Texas)
@ 30 x 3.5" deck screws
@ 30 x 1.5 deck screws
1 x bucket
1 x faucet
1 x 'Y' split hose adapter
1 x 1/2" hose coupling (part no.: Watts A-810)
1 x 3/4" / 1/2" Hose adapter (part no. Watts A-677)
1 x garden hose (length depends on your environment)
thread seal tape
Step 2: Frames
If you cut different sizes (or even to double check the layout) I recommend placing the 2 x 4's on top of the cut plywood to ensure that you have the boards lined correctly. On my bench, the 28" board is on the sides and the 33" are on the inside of the 28".
Step 3: Legs
NOTE - plywood shown in picture is not yet attached, only being used as a guide here.