Hi krithiks,
My name is also Krithika!!
So, when i saw the name Swamimalai Murugan, I had to reply. He is kula deivam from my parental side. (In my in-laws side, it is Vaidheeswaran temple)
Before my marriage, we ,as a famly would go to Swamimalai temple (along with many many temples in and around Kumbakonam) every year (my parents do this even now and my brothers join them whenever they can) and offer abhishekam,donation,offering of vastram,flowers etc. This they do without fail every year ( it is their belief and not a said rule)
Other than that, just like any other festivals, anything associated with Lord Muruga is extra special at home.
I can also probably ask my mom (IL'ite Padmini) to reply to your query. She can give you a much better reply on this.
Cheers