On the original question and judging by the Revenue literature, the OP is 100% correct, all the items listed can be viewed as a seperate transaction and so reduce their stamp duty bill. Where I believe the OP is mistaken is in the values attached to the items. Whilst I'm sure each of these items did originally cost a fair amount of money and it's true that you can agree whatever fee you wish when creating a private transaction, Revenue will more than likely view this as an artificial transaction created solely to reduce a tax liability. Which it obvously is. What would be the market value of a 2nd hand carpet cut to the dimensions of a particular house? Tiles chiselled off a wall? Any electrical equipment? Check out FreeCycle.com or DublinWaste.ie to find out.
The key part of the Revenue literature is
Ordinarily legal contracts would be written so that all the articles named by the OP would be included, not deliberately excluded. We all know of cases where people turn up at their new house only to find it stripped of all the fittings, including lightbulbs, because they didn't ensure this was in the contract.
All that's really being achieved here is extra work for the solicitor in drawing a seperate contract (and presumabily a higher bill). I would imagine this is a scenario that has been suggested by the vendor or agent in order to entice the buyer, make them feel like their getting a bargain. If you want to have 1K more in your pocket offer 1K less on the asking price.
In the long run you may not be saving yourself anything. If at some point in the future this prperty became an investment property and so liable for CGT on it's eventual sale you would have to calculate your taxable profit on the lower amount you're paying. As a result you'd face a 20% CGT bill on the amount you'd paid for the contents. So save 3% short term, pay 20% long term.