Ikebana without Plants or Flowers: Arranging Unconventional Materials

I had great fun in this week's lesson. Before the lesson, all week I have searched the house for objects and materials that can be used for a 'quasi' Ikebana arrangement. I have looked at the things around me with a new gaze and searched for qualities that can be interesting and to a certain extent liberating to use in an Ikebana setting. I have arrived the course with two bags of materials including a ceramic objects, boxes, biscuit tins, chopsticks, fans, wires, paintbrushes, tissues, plastic wraps etc... then I have let my imagination get loose.
Here below are some of the arrangements I have come up with.

A year ago, we made another arrangement combining unconventional materials with plants and flowers. Time to time adding a different material to an Ikebana is quite refreshing and fun. However arranging only with unconventional materials is another story. It forces you to open up, experiment and create differently. I love it.