Just milling lumber.  Everything was made from 4/4 red oak.  It was my first hardwood project and I was not sure what I was getting into.  I made the lumber selection almost exclusively on price, and as red oak is on the low end I went with it.

Quick and dirty tapering jig for the legs

Laying out the tenons

Test fit the frame...and realize that I messed up the taper on the legs.  It may be hard to tell in this pic but the taper is cut on the outside instead of the inside.  I decided to extend the taper all the way to the top and just go with it.  In the end, the look was a little unusual, but I liked it.

Learning how to make more delicate legs.  I picked up this method from Marc Spagnuolo and I really liked the idea.  You can also see that I laminated the legs rather than springing for the thicker stock.  In hindsight, I would go for the thicker stock and try to get cleaner grain.  Live and learn. 

Both legs pillowed

Bunch of mortises using a drill press like a mill (not the cleanest method but it works)

Adding some curves to soften the look. Here you can see the extended taper on the outside of the leg.

Dry fit the frame.  The uprights all still need to be trimmed to size.  There are specific guidelines about how much the uprights can be proud of the rails.

Making a tray to hold the bassinet mattress.  The curves were cut to match the rails and the corner cutouts are to help it clear the legs without creating a gap.  The size of this gap is mandated in the government safety guidelines.

These supports hook to the bottom rail (and are held in place with screws) and they slide between the mattress and the box spring.  This prevents the piece from tipping backwards, and the friction is enough to make it not slide out.

Test assembly to see the overall look.

This is the "bed side".  The supports will go under the mattress to keep it in place and the tray gets screwed to the legs and sides at the height of the mattress. (the can is there just to hold it up so I can see how it looks)

Danish oil finish.

In place by the bed.  The bassinet mattress is set just slightly below the bed mattress top.  This was done to prevent the baby from rolling out into the bed.  However the difference is slight so it is easy for a parent to reach in and pull the baby close.

Side view.  Here you can see the supports screwed into the cross member and extending under the mattress.