My best tip on this exercise is to keep an open mind, for the music topic my first thought was to take the guitar outside and lean it against a tree, thinking the the wood of the guitar and the tree would make for an interesting natural shot, I was shooting different angles trying to keep the ugly metal shed out of the shot, and I thought lets just try a couple with the shed, produced a much more interesting shot than the tree.
A piece of black velvet to use for a background is one of my favorite things, I use it mostly at weddings but it worked well for the guitar too.
My two interpretations of "tea" I went for very simple. The bottom set belonged to a dear friend, I liked the way the light caught the pearl glaze and the reflection on the table. The top one didn't work so well on the table, I ended up placing it on my foamcore board and propping it right next to the window the simple lines and strong shadow made a nice image.
These are for the feet challenge, feet waiting in the dugout, and feet watching the game.