You can create a special mantapa for your family deity if you spend a little time and employ a little patience and creativity.
You need to buy 4mm glass and one gross of smallest sized glass bottles (Usually available in shops selling laboratory material), some colourful marbles, a glass marker pencil and a tube of glue. Get the glass cut into five squares measuring. Two of which should measure as a twelve inch square and the other three measuring 10, 8 and 6 inches respectively. Even if you happen to choose some other geometrical shape, keep in mind that the proportion should not alter. Two glasses meant for the base and the dome should be identical in size and the other should become smaller in uniform proportion. Get the edges of the glass ground so that they do not cut your hands while working on them or cleaning them later.
Wash the glass and the bottles in soapy water and allow them to dry and wipe it clean so that the dried up water droplets are not seen. Remember while pasting the glasses one on top of another, the opening should always face upwards. Draw diagonals across all the glasses with the marker. You can wipe the markings off with a swab of cotton after the completion of your work. Mark points on the four ends of the glasses with the pencil so that the point is exactly one inch away from corners of the glass and appears on the diagonal.
Take the twelve inch square glass and paste three glass bottles on each corner and let it dry.
They will form the cornerstones of your relic. Turn the glass over and work on the plain side. Place a glass bottles on each marked point and once you are satisfied with the symmetry glue it on. Place the next four bottles on the previously pasted bottles and repeat the process till it reaches a height of eight inches. They will form the pillars of the mantapa.
Place another glass measuring twelve inches on the four pillars and glue it on.
Once again place the glass bottles on the marked point, check out the symmetry and glue it on continue working on the new pillars till they measure two or three inches
Place the ten inch glass on the newly formed pillar and repeat the process and then place the square glass measuring eight inches and glue it on.
Now you have reached the topmost panel of your mantapa. You can place the bottles all around forming a small corridor on the terrace and glue them on.
You can use your imagination and pile the bottles in several ways to build the dome according to your taste. Usually a pyramid shape compliment a square base best.
Paste the marbles on the open ended bottles to give it that touch of glamour.