I built these stairs for my mom whom recently got a new brussels grifon puppy. The carcase & internal compartments are 1/2” red oak ply with edge banding on the exposed surfaces. The treads & trim are solid red oak. The joinery is mostly biscuits with a few pocket hole screws where not visible. The top & bottom stairs are hinged/cleated to allow for storage space for all her little toys & treats. The bottom has a through door for a indoor dog house if you will(& you will!). That’s where i made a bit of a flub. I made mouldings that wrap around the 1/2” ply & decided to miter them. Unfortunately i realized half-way through that you can’t get the last piece in if you miter them. So if you look closely you can see i cut the last piece in half leaving a small gap where i wedged in a piece of molding to fill the gap. If i were to do it again i’d probably just but them or make it a design element & use a contrasting wood to show of the flub. I finished with a minwax natural stain 3 coats of polyurethane. Right now i’ve got the carpet just taped down with double sided carpet tape. This keeps the carpet in place okay but the edges tend to curl up. If anyone’s got a better idea on how affix the carpet, please do tell.