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Following on from last week’s guide on ‘How to make a cardboard laptop‘, Evie and I decided to take it one step further.
This week, we made an interactive cardboard fish tank complete with fish and I have to say, we loved it!
Here’s a quick preview:
You will need:
- A cardboard box (A BIG rectangular box is best here)
- A craft knife
- Coloured Card
- Googly eyes
- Paint Markers
- A marker pen
- String
- Play-doh or plasticine
- A ballpoint pen or a golf tee
- Glue (PVA or Pritt Stick)
1. Cut your fish tank
The fish tank shape is nice and simple – all you need to do is cut a little window in the front of the tank so you can see in.
Keep a reasonable amount of card on the surround to help the box keep its strength and rigidity.
We stuck down the edges to create a simple little frame too.

2. Draw your fish and seaweed
It’s entirely up to you how many fish you do; we chose to do four.
Using your different coloured card, just sketch the outline of a different fish onto each piece of card (Stuck for ideas, just do a Google search for fish templates for some inspiration!).
3. Let ’em loose with the paints!
The beauty of this next stage is that it doesn’t matter whether your kids stay in the lines or how they decide to paint the fish.
Evie got totally creative here with her paint pens and I think she did a fantastic job!

4. Give ’em some personality
Get yourself some googly eyes and stick them on as you see fit.
I mean, I think this part is relatively self-explanatory, but if you need some help as to where the eyes go, Evie will expertly demonstrate…

5. Get cutting
Now then, grown up…Time for you to roll your sleeves up and get stuck in.
Take each of your wonderfully fishy little shapes and cut them out as neatly as you can.
Evie expertly filmed me doing this, just in case you were wondering what cutting an object out looks like…
I know, right? We’re so helpful.

Well, would you look at that?
You’re a regular ol’ fish expert now.

5. Prepare your fish tank
Now you’ve got all of your fish ready and waiting for their new home, you need to get your cardboard tank ready.
We used blue card at the back of the tank and glued a few pieces of seaweed to the bottom.
These work really nicely for giving the tank a really three-dimensional feel.

6. Hang your fish
To hang your fish from your cardboard fish tank, you’ll first need to make a hole on each one somewhere near the top.
We did this by rolling a piece of plastercine into a ball, placing the fish on top and then piercing a hole using a golf tee (You could also use a ball point pen).
You’ll need to pierce a hole in the top of your tank, although grown ups…I’d suggest you do this bit yourself.
Next, you’ll need to connect a length of string from your fish through the top of your fishtank from the underside and out the top.
It’s a good idea to use something larger than the hole here that can be easily gripped by little hands…
This will give your child the ability to move your fish up and down in the fish tank for a truly interactive, sensory experience.
Et voila! You’re there.
Great job!
For other kids activities that you can try at home, have a read of this article, or for another great little cardboard craft, make sure you have a go at making a laptop too! Super simple and lots of fun.
