We have started making and using in-garden worm 'cafes', a piece of repurposed pvc, which can be found at roadside chuck outs.
Once you have installed the worm tower start putting kitchen scraps in there, not too much at once, though.
Avoid putting large amounts of onion or citrus in there if you can as the worms avoid these foods. Include some paper or cardboard as bedding for the worms so they have somewhere to rest between feasts.
|the inside of the lid|
|happy worms hang out near the surface under a well-fitting lid|
Make sure you have a lid that fits well so that rodents can't get in and steal your worms away and to keep the moisture in.