In one of her books, Harriet Hargrave suggests a particular brand of computer table. I found 2 similar computer tables in a thrift store for $20 each. They are heavier than the Walmart one you linked to, but work fine even without an acrylic fill-in surround. I have not had anything fall in or snag, and the best thing is that there is plenty of room for my long legs. You might want to check with a place that sells used office equipment.