I picked a tree with a lot of spindly branches to hang jewelry on.

I added a line down the middle of the tree to cut it in half.

I set everything to Cut, 100 power, 37 speed

I added an oval the width of the tree for stability.

I added a rectangle the width of the wood and the length of the cutout tree trunk. Copied and pasted and arranged as needed.

I selected the oval and the rectangles, clicked on combine and then unite.

I set everything to Cut, 100 power, 37 speed

I made a square,  added 4 rectangles the same width as the wood I am using.  I cut out many sizes to find the best fit.

I set everything to Cut, 100 power, 37 speed