Drums...
Choosing a drum kit
Acoustic or electronic? - Acoustic is best.
An acoustic kit offers the real feel and helps pupils learn to control volume and dynamics. This is the best option - dampeners are available to bring the volume down too.
An electronic kit can still be a practical choice where noise or space is limited—especially if the pupil also has occasional access to an acoustic kit at school or during lessons. Remember you will still have the tapping and vibration from the pedals so they are not as quiet as you may think.
Whatever kit you choose, a separate practice pad is invaluable for developing hand technique quietly.
Size and layout
For younger pupils, I usually recommend an 18-inch or 20-inch bass drum. A standard 22-inch bass drum can be unnecessarily large for a child.
If graded exams are a possibility, check the relevant syllabus before buying. A versatile setup normally includes two mounted toms, a floor tom, hi-hats, a crash cymbal and a ride cymbal. Some starter kits do not include a ride cymbal. Ask me before committing to a big purchase!
Keeping the peace with neighbours!
Agreeing sensible practice times makes a tremendous difference. Short c.20min consistent sessions. Avoid mealtimes, late evenings and other agreed quiet periods—this is usually easier for everyone to support. Be considerate, be upfront and be consistent.