Sciency stocking fillers for an 11 year old boy

[LePetitMarseillais]

Any ideas?

Aha - I can help on this one, as I have assembled some bits for my sciency DS.

A prism although this one came from China so watch delivery date
Some things from here Grand Illusions
Sugru
some bits from I want one of those
a small book of optical illusions
rubiks cube knickknack
3D puzzle

Does he have a microscope? You can get prepared slides from Amazon for around a tenner

Mentos and a bottle of coke.
Magnets
Small crystal growing kit
Litmus paper
Pen style microscope
Sharks teeth
Rocks and stones

Science museum has lots of bits and think you order on line
Ds has lots of science experiment books.

Dss stocking has

David beckhams spray
Thermo travel mug for hot drinks
Gun shape comb
Stress ball
Toblerone
Bookmark
Simpsons DVD
Socks
Football team wrist band
Gloves
Hair wax

my ds is obsessed with his dads soldering iron, so i've ordered this to keep them both busy on christmas day!

www.madlab.org/kits/thief.html

Thanks for all the other great ideas

Fossils

Gemstones, fossil sharks teeth, kite, magnifying glass/bug watcher kit, compass, Usborne spotters guides or equivalent, rubiks cube, magnets (my much younger DDs have just spent an hour playing with their magnet set).

A slinky!

Horrible Science book, or 2014 annual.

Bright Minds has a lot of good ideas, although they might be too expensive for stocking filler things.

Science Museum Science Putty (amazon have for £4.99)
Horrible Science Explosive Experiments kit (£14.99)
Horrible Science books (amazon have the 10 book boxset for under a tenner)
Horrible Science Volcano Kit - £5.99
Science Museum Science box kits - Under £10
Periodic Table mug
Fun Snaps
Electronics type kit from maplins
Space Top Trumps