My take on stands is to avoid particle board items because they soak up water like a sponge and it will ruin them. A few inches of water will not add much weight compared to an aquarium. As an example, 4 inches of water will come to around 6 gallons with a weight of 50 pounds or less depending if using a false bottom or lots of decor.
Like Bill and Gary suggested; a nice used solid night stand or end table made of real wood will work fine as long as top is same size or larger than enclosure base. It's very important the corners of enclosure are supported because that is where most weight will be at.
For regular aquarium sized enclosures, I use the Slated Pine Wood stands made by All Glass and Perfecto. They are extremely sturdy, can handle water splashes, and their open bottom design provides bottom access to drilled enclosures or those with built in drains. The light oak version look well with most decor; but they also come in red oak and black too.
If you have several enclosures and do not mind the industrial look; think the chromed or similar wire shelving units by Trinity are the way to go. They come in 18 in. (Amazon & Cosco sells them for $100) and 24 in. (same for $220) and can hold many enclosures since they are built to industrial standards. Good luck!