Arvind Gupta is an Indian science communicator who specialises in making toys from the sorts of stuff you probably have lying around the house. His website is full of terrific ideas and starting points, and his YouTube channel has hundreds of films like the one above.

Pretty much any of Gupta's ideas could be used as starting points for SciCast films. In fact, they're very similar to the things we used to do on CITV's The Big Bang, which was one of the inspirations for SciCast in the first place.

Get making!

When he isn't judging SciCast, geologist Iain Stewart manages to squeeze in a series or two for the BBC. His latest starts on BBC2 tonight, and there's an astounding sneak preview.

Iain travels to the Naica Cave in Mexico, where he and his crew battle 50°C temperatures and 100% humidity to bring remarkable footage of the world's largest crystals, in a deep underground cavern. It's phenomenal stuff.

I can't embed the video, sadly, but do check out the link. You'll be glad you did. And remember, we do have a geology category for the SciCast Awards...

[update 20^th Jan: 3.5 million viewers! The highest figures for a science programme on BBC2 in four years, according to the Guardian. Fantastic news -- congratulations Iain!]

Here's a terrific source of ideas -- the American Science Buddies website. They have a huge catalogue of project ideas, categorised by subject area, difficulty, how long they might take, and how much materials might cost you. There are also extensive links lists to source materials, to get you started.

Projects in the vast directory range from mucking about with yeast to making your own seismograph. There are about 700 ideas in there, so you should find something to your liking.

Great stuff.

I'm not sure this quite fits into the category of 'science demonstration,' but it sure looks like fun. And it might just spark clever ideas in some of you, so: how to make a bubble tube foam-erator.

(via Make)

Here’s another competition for you: Capture It!, from our friends at Films for Learning. Entry is open to schools affiliated with the Specialist Schools and Academies Trust, and there are excellent prizes on offer.

Be very very quick, though, as the deadline for this one is June 13^th.

"What camera should I buy?" is just about the most common question I get asked by prospective SciCast film-makers. My usual reply is "What have you got already?" -- most people, it seems, have a mobile phone that can record video, or a stills camera that has a video mode, or a mate who has a video camera, or there's something stashed away in the back of the cupboard in school, or...

When people actually want an answer, however, things get trickier. Broadly, you get what you pay for. We've some basic notes on the main SciCast site to get you started, but it's hard to know what you're actually getting for your money.

Enter the BBC. Springwatch last week featured an excellent story with a pair of teenage brothers who are keen wildlife cameramen. It's a lovely piece, but it's also interesting (and useful) since it sets footage from their cameras alongside professional equipment. The brothers are using cheap-and-cheerful Sony miniDV cameras, and the footage from them looks rather flat and blurry, and somewhat purple-edged, next to the shots from the 'proper' camera.

But you know what? Once the clips are compressed down to web video quality, it doesn't make anything like as much difference as you might expect. Having a good eye is more important than having the 'best' camera gear.

Don't believe me? You've three more days to catch the film on iPlayer. It starts about 24 minutes in.