Welcome to the Quilting Board!
I used a tabletop that came from a RV and made legs with 2x4's with the locking casters so I can move it around where I need it then stretched a few layers of batting and a layer of insulated batting with ironing board fabric on top. I stapled all the layers on the bottom. It's large enough to iron backing for my quilts without dragging on the floor. I also added a shelf on the bottom for storage. It's not as fancy as some of the tables I've seen here but I liked it because I made it myself ( my husband helped with the screws , I didn't have enough strength to screw them in all the way in ).
Tried to download the picture from the camera. It's not working, so I'll try to describe.
First I'm always in the need for storage. So I got a bakers rack from Costco. With the castors it's 40" tall. 48" wide and 18" deep. It has 3 shelves +top which is a big board. I got ArtBin containers to store notions, orphan blocks and WIP/UFO.
I built a pressing station out of an old shelving unit by attaching a big piece of plywood and covering the top with batting and fabric stapled to it. It was great because I cut it down to be the perfect height for me and it has shelves to store all kinds of stuff up under it. It doesn't have casters but it has the little plastic cups like are on the bottom of deck furniture so it slides easily on the carpet in my sewing room. It is heavy enough that it doesn't move around when I'm ironing, but easy enough to pull away from the wall if I need to iron bigger stuff that hangs down the back. If you do use caster, I agree they need to be the kind that lock.
"Piecin' a quilt's like livin' a life...The Lord sends us the pieces, but we can cut 'em out and put 'em together pretty much to suit ourselves, and there's a heap more in the cuttin' and the sewin' than there is in the caliker...I've had a heap of comfort all my life making quilts, and now in my old age I wouldn't take a fortune for them." (Eliza Calvert Hall, Aunt Jane of Kentucky)