Do you want 'furniture', or 'utility'? What's your budget? I assume you'll want it at least table height (28") up to counter height (36"). The casters will probably need to lock, since it sounds like you do some vigorous scrubbing.
IKEA has several different kitchen work centers such as this, and this that may serve your needs.
Home Depot has a Rubbermaid product here that is more industrial, and doesn't seem to have locking casters, but gives you an idea.
Of course, you could add casters to any table to provide mobility. Sometimes, when you're looking for something absolutely specific to your needs, you need to think outside the box, and be prepared for some DIY. But hey, that's all part of the 'fun'. Right? (-:
IKEA has several different kitchen work centers such as this, and this that may serve your needs.
Home Depot has a Rubbermaid product here that is more industrial, and doesn't seem to have locking casters, but gives you an idea.
Of course, you could add casters to any table to provide mobility. Sometimes, when you're looking for something absolutely specific to your needs, you need to think outside the box, and be prepared for some DIY. But hey, that's all part of the 'fun'. Right? (-: