I'm not in sg right now and can't give long replies.
We don't worship statues, but the images/statues of Buddhas
allow us to remember and pay our respect and reverence to our
greatest teacher.
As for joss sticks:
http://www.jenchen.org.sg/jen.htm
What is the significance of
offering incense, flowers, water and fruits?
Offering
incense, flowers, water and fruits
The
fragrance of the incense is symbolic of ethics and morality. These
are the virtues of the Bodhisattva spirit of benefiting others and
self. If we do not practise ethics and live immorally, then the
offering of incense does not serve any purpose. Offering of incense
is only meaningful if our conduct befits the correct standard and
principle of ethics and morality.
Flowers
are symbolic of wisdom. We learn and practise Buddhism to unfold
and develop our wisdom. When the wisdom blossoms in each and
everyone of us, then as human beings, our conduct is like flowers
in bloom. Everyone admires beautiful flowers and they are welcomed
everywhere. Thus, when we make an offering of flowers to the
Buddha, it is that we want to be like the Buddhas and the
Bodhisattvas who are so filled with wisdom.
Water
serves two purposes. Firstly, it quenches our thirst. A drink of
water is so soothing and comfortable when we are thirsty. Secondly,
it is for cleansing, for example, washing our clothes or the floor,
etc. When we learn and practise Buddhism, the Dharma is like the
morning dew, cleansing the impurities of our hearts and minds so
that we are soothed and happy.
The
offering of fruits is made not because Buddha wants to eat them.
When we learn and practise Buddhism, and perform virtuous deeds,
these virtuous deeds should bear sweet fruits. Thus, the offering
of fruits is symbolic of the results of our virtuous deeds. It is
best to offer fruits that are round. This is again symbolic that
when we cultivate in accordance to the Buddha’s teachings, we will
eventually be perfectly rounded and attain the fruit of Buddhahood.
For obvious reasons, we should not offer fruits that are sour,
bitter or of unpleasant shapes.