Welcome to the nut farm! There are 7000 members here and thas how many opinions you gonna get! Seriously, a tool kit is a good idea and can save you a major headache. Plus, Murphy's Inverse Law says if you have a tool kit nothing will break! I have one I take on trips that is tailored to the fasteners on the bike, a Downtown 300i. The sizes will probably match most of your two bikes. 7, 8, 10, 12 & 13 mm sockets and 1/4" drive handles, 9 & 10 mm combination wrenches, 4" adjustable wrench, feeler guages and of course, the cheapo tool kit that came with the bike. Sticky rope tire plugs and a short bicycle pump. Some touring riders carry a spare CVT belt and tools but they go on really long trips. There. That should get you started! Watch out, though. You may get hooked on scooters and never even consider motorcycles! It HAS happened! Then there are really old guys like De dee and me who can't hold up or pick up a motorcycle anymore riding scooters!