This is the photography part. I invested in a good camera, a couple of great lenses and a light cube/lamp set (eBay for around AU$100). Best thing ever for taking nice, detailed pics of your sculpts.
A draw set my sister gave me. This has laminating pouches, stickers, printer papers, envelopes etc in it. Lenses and camera charger on top. Probably not the safest place for your $1000 lens!
Mum's old 'Singer Blue Magic' sewing machine. I make up sculpts clothing on this machine... as well as doing the household mending and other crafty projects.
Various bases and stuff I've picked up for sculpts. Also some stands for WIP heads.
Biscuit tin full of clay.
Glass sheet for a worspace, glass cake stand (turns), anatomy reference pics (under the glass) and a WIP or two. Glass is FANTASTIC. When it gets dirty with paint and clay and glue all over it, I just use a blade and a wipe and get rid of the muck. You can also put reference pics under it which don't require laminating because they are already under glass and always handy.
Various tools and brushes (most of which are found or hand made). Also Liquids I frequently use such as glues, glazes, oils and liquid clays.
Super wattage lighting. Since I don't have much natural light in my studio, I have lots of additional lighting.
Modem, printer, laptop spot. Sometimes laminator, UV lamp, glue gun. Basically where the power is!
Ever-full rubbish bin. Halfway there so better add another pic after this one.