But over the years there has been some very strange merchandise available, so we've gathered up some of the weirdest Doctor Who items that have appeared on the shelves in the last 50 years.
How many of these did you have?
Tom Baker Underpants
I don't think any child would've wanted to wear these, no matter how much they loved Doctor Who. Look at the size of them, Tom's hair would be sticking out the waistband of your trousers.
Plus could you imagine getting changed for P.E. and stripping down to your Tom Baker pants? Oh, the bullying that would ensue.
Mind you, you could always claim that it's bigger on the inside!!!
Sonic Screwdriver Talking Pizza Cutter
This is one that's available today. Of all the uses I could think of for a novelty Sonic Screwdriver I don't think I'd ever have thought Pizza Cutter!
But if you fancy one then you could buy this for those times when you're really, really struggling to cut up an over-microwaved Chicago Town pizza and only Time Lord technology will do.
Not only that, it talks!
Destroyed Cassandra 'Poseable' Action Figure
Happy Christmas Billy, here's your present.
It's a box. An almost empty box.
I think there's a case to be made for misleading advertising here.
How on Earth is this poseable?
Or action?
I would image you'd have to be the most die-hard of Doctor Who completest to own this.
But if you do want one, we just checked and Amazon have them. But hurry, at 50p they won't last!
Walls Sky Ray Space Raider
Unfortunately I'd missed the mass hysteria of the mid 60s when Doctor Who was on just about everything imaginable, including these ice lollys...
The ice lolly itself isn't so strange but the free 'colour' picture card kind of is. Walls created their own Doctor for the giveaway, modelling the likeness a little on the second Doctor but apparently mashing him up with Guy Fawkes...
Ladies and Gentlemen, it's the Pat in the Hat!
Dalek Playsuit
I know this came out in the 60s but let's also remember that we put a man on the moon in the same decade!
The Berwick Dalek Playsuit was essentially the bottom of a dustbin attached to the centre of laundry basket with a red dustbin liner glued to it. You held on to the gun and sink plunger and ran around shouting "Exterminate!!!"
Actually, that does sound pretty cool. Unfortunately, they now sell for a fortune on eBay.
Oh well, back to my talking K9!