The Mishkan, or Tabernacle in the wilderness, is a model for each of us who makes a space for Jewish personal prayer. We have no Holy Temple in Jerusalem, and no carefully-constructed portable tent structure. What we have is our own souls housed in our own bodies.
Thinking about ourselves as a dwelling place for prayer, and for individual, personal prayer, can be a comforting thought. There was no siddur at the time of the Mishkan described in Torah; there were priests conducting ritural sacrifices. Now we have a siddur but no priesthood conducting ritual sacrifies.
Now Jews can use a siddur or speak spontaneously aloud to God, and both represent a sacrifice of prayer from their souls, their Jewish prayer Mishkan.