10 Back to School Amazon Essentials Under £20 (2026)
Kitting a child out for September adds up frighteningly fast, but almost everything on the school list can be picked up on Amazon UK for less than the high street charges — and delivered without dragging anyone around the shops in August. Every one of these ten picks costs under £20, and each is a well-reviewed, widely bought product rather than a cheap unknown that falls apart by half term. For more family savings, browse our baby and family deals page.
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The big three: bag, lunch, drink
Amazon Basics Classic School Backpack
A no-nonsense backpack with a padded back, two main compartments and side bottle pockets, in a range of plain colours that pass any uniform policy. It is roomy enough for A4 folders and a PE kit, and at this price you will not weep if it gets dragged across a playground for a year.
Typical price: £16.99
Sistema Bento Box To Go
The lunch box that ends squashed-sandwich complaints. Sistema's bento has separate compartments plus a small pot for yoghurt or fruit, so nothing leaks into anything else. It is dishwasher safe, BPA free and made in New Zealand by a brand parents already trust from every supermarket shelf.
Typical price: £9.00
Ion8 Leak Proof Water Bottle (500ml)
Ion8 bottles are a UK playground staple: genuinely leakproof, one-handed to open, and slim enough for a bag's bottle pocket. The 500ml size suits primary and secondary kids alike, and the flip lid keeps the spout clean. Loads of colours, so siblings do not squabble over whose is whose.
Typical price: £11.99
Classroom kit
Casio FX-83GT CW Scientific Calculator
The calculator UK schools actually recommend for GCSE maths and science. The FX-83GT CW is the current version of Casio's long-running classroom standard, allowed in exams and built to survive years in a pencil case. Buying it now avoids the September price bump when everyone needs one at once.
Typical price: £13.99
Helix Oxford Maths Set
The famous blue tin, unchanged in spirit for generations: compass, protractor, set squares, ruler, pencil, eraser and sharpener. It covers everything the maths department asks for in one purchase, and the tin keeps it all together — at least until October.
Typical price: £4.99
Staedtler Noris HB Pencils (12 Pack)
The black-and-yellow striped pencil every British classroom runs on. Noris pencils sharpen cleanly, resist snapping and last far longer than bargain-bin alternatives. A dozen sees most kids through the year, including the ones that vanish into the sofa.
Typical price: £4.49
Pilot FriXion Ball Erasable Pens (3 Pack)
Erasable ink that actually works: write in pen, rub out mistakes with the built-in tip, no mess. FriXion pens are hugely popular with school kids for exactly that reason, and refills are cheap. A three-pack in blue or black covers the pencil case and the inevitable lost one.
Typical price: £7.99
The bits parents forget
Helix Oxford Zip Pencil Case
A tough, simple zipped case that matches the maths set and fits everything above. Cheap enough to buy two — one for the school bag, one for homework at home — which quietly ends the nightly "where's my pencil case" hunt.
Typical price: £3.99
Stikins Stick-On Name Labels (Pack of 60)
No ironing, no sewing: Stikins labels stick straight onto clothing wash-care labels, water bottles, shoes and lunch boxes, and stay put through the wash. Sixty labels covers a full uniform and kit list. Given what lost-property bins look like by Christmas, this is the best-value item on this list.
Typical price: £7.99
Pukka Pad A4 Jotta Notebooks (3 Pack)
Three 200-page wirebound A4 pads with quality 80gsm paper that fountain pens and gel ink do not bleed through. Pukka Pads are a British stationery favourite, and a three-pack sorts homework, revision notes and rough work for two terms at least.
Typical price: £8.99
Final word
All ten picks come in under £20, and most under £10 — but prices move around, especially in late August, so check before you buy. For more budget finds all year round, our deals under £20 page is the place to look.