Well I still have paper books and just find it a lot more convenient. I keep one book with sections for each car and major equipment such as the lawn mower, etc. I also have a section in it for house stuff and yard repairs. Everything is logged in the book with mileage, date, cost, and any other useful information like part numbers for the future. Receipts are just put in the book in that section and if they get too thick, file them with the car documents. So I can go to one book and see when I planted trees, replaced the trailer bearings, when the furnace was serviced or repaired, and the hinge numbers for replacement cabinet hinges.
Works a lot better than screwing around with a computer. The only less effective part is if I want to schedule future work at certain dates or mileages or a spring project list. But I don’t think a computer would help with that.