It has more to do with what it is and it's use than the value of it. Something that is to give long term value and especially something shared like a new vacuum cleaner or playhouse. In theory they are supposed to go in that category and there is no actual dollar value but if it is under $200 rarely is anything said in an audit from what I have been told.

In the first year that you buy something you can only use 50% of the value of the item to determine your deduction - it tells you how to do it when you fill in the chart on the T2125 form. In subsequent years it will count for the full value.