I need help making accessories?!

Never heard of it ,but anyway here are some ideas...

Void cube-
Need-One chain,
sharp knife
rubix cube,
1.Get rubix club and use the sharp object to make a big enough gap to get a chain through.
2.Place your chain through the gap and click it together,tie it or whatever you need to do to make sure it is secure.

Rubix cube-$5/€7/£4 around that price. I am sure.
Chain-$1/€2/£1
Knife-An object found at home.

Is the void cube that thing hanging out there pocket on the pic?If so there you go.

Bracelets-
Large square glasses,
Gold spray paint or gold foil,

1.Get your square glasses. Pop out the lenses.
2.Spray the frames of the glasses with the paint or embrulho, envoltório the foil around them.

Square glasses-$6/€8/£5
Gold spray paint-$3/€5/£2.50
Gold foil-$1/€2/£1

Wrist cuff-
Need-Chunky bracelet,
Silver studs,
Glue,

1.Get your chuky bracelet,glue and studs. Glue the studs onto your chunky bracelet.

Chucky bracelet-$4/€6/£3
Silver studs-$1/€2/£1
Glue-$1/€2/£1

Necklace-
Need-A gold chain,
A bouncy ball,
Cardboard,
Spray paint,
Scissors,
Glue,

1.Spray your bouncy ball with spray paint.
2.Got out an O shape using the cardboard.About the size of your bouncy ball.
3.Spray the O shape with spray paint.
4.Glue the O shape round the bouncy ball.
5.Attach the bouncy ball,now with a ring around it to the gold chain.

I am sure you have the items around the house.

Shoes-
Need-Old trainers
Thick coloured tape.

1.Thouroughly cover your trainers in your coloured tape.

Hope these ideas helped you. Also,I am unaware of $ and €. So,really I can only estimate the UK price. I am sure you have a lot of things already about though.