I recommended off grid panels because they're much cheaper than 12v ones. I assumed you were doing an off grid setup.
A good mppt controller will step the voltage down to charge a 12v battery and get the maximum juice out of the panels.
The charge controller I recommended is overkill but they're down to $170 now. With this you'd get the most out of your panels, would have room to upgrade, and it's way less likely to burn up like the sub $150 cheapie ones seem to do frequently.
Even if you ran the laptop (65w?), the sewing machine(85w), and 50 watts of light, simultaneously, you won't need much inverter. Some electric motors don't like modified sine wave power though so you may want to look for a 400w pure sine inverter. The extra wattage is for extra headroom and to account for a possible higher startup wattage on the sewing machine. I used to run a lathe that only pulled 600 watts but it took a 2500w pure sine inverter to start it and run it wihout the motor getting really hot.
If you calculate how many hours a day you want to run things and when, we can figure out exactly what size battery bank and panels you'd need.