Inexpensive craft store frames fit perfectly around light switch covers! --I like the LOOK Expensive (but not really BE expensive! -- 31 Easy DIY Upgrades That Will Make Your Home Look More Expensive--
Like the concept of a DIY pedestal, but would make it the same or similar color of the washer and dryer to give it a more put together look and add drawers instead or a fabric curtain to hide the laundry baskets
I don't think I would use black shower curtains to make a room look larger, but the idea is a good one. Maybe curtains the same color as the tile, or a loghter shade of taupe. Floor-to-ceiling shower curtains. Make a small bathroom feel more luxurious.