The reason it "flashed you back" to the Business Income and Expense, is because you indicated you wanted to expense all of your assets that were less than $2,500 in cost.
If you still want to do that you should list them under "Miscellaneous Expenses" in the "Less Common Expenses" section. I suggest you list each one and the cost to easily track this information in the future. They are always relevant until sold or disposed of for tax purposes.
For the laptop: use the business use percentage based on business time of use divided by the total time of use including the personal use time.
For vehicle expenses: You can use the business miles by taking the standard mileage rate as long as you have a record of your business trips including date, business purpose and miles. A calendar can be used for this that is easily kept in the vehicle to record your business miles. Again, this information is relevant for as long as you own the vehicle so keep your records easily accessible until it is sold, traded or disposed of.
