This is so simple to do, All you need is a small log and some very basic tools.
I usually make a dozen of these each year for the local infants school, Just mix suet or lard and some bird seed in a bowl, then
stuff the mixture into the holes, hang it on a branch or something... happy birdies!
Step 1: Tools and materials
A piece of branch wood. - this one is approximately 75mm x 180mm
A 25mm drill bit. - Forstner, spade or auger.
A Hook or staple.