Smiling girl holding a pot of blue slime inside the craft room at Haven Caister-on-Sea holiday park.

The O'Hallorans

The OHallorans

We’re made up of Lyndsey, John and Erin, who all love a new adventure. We try to get away as much as possible, especially during school holidays and variety is a must for us. That means staying anywhere from a luxury hotel to a hostel and it’s not often we go to the same place twice. 



If you’re going on a holiday to a Haven park, then you can expect there to be lots of activities to take part in. As there are lots to choose from, it can be hard to know what to pick! Find out more about Slime Creations, an activity we took part in at Haven Caister-On-Sea.

How to book

You can book activities in advance of your Haven holiday online, or on the My Haven app. You can browse through the days of your holiday to see when certain activities are available. It might be that some activities are only run once during this time.

If you book in advance, you can do so via your Haven account or the app. You will need to select the day and time of the activity from the activity listings, and how many people will be participating. Adults supervising don’t need to pay for a space. You will need to pay in advance when booking via the app.

Booking is also possible at the Haven site you’re staying at. There is usually a desk or area for booking any activities, possibly in the family entertainment centre.

Smiling child sitting at a table with craft trays and supplies in the Haven activity room.

How much does this activity cost?

This activity costs £7 (2025 price) per person.

What age is Slime Creations suitable for?

Slime Creations is suitable for all ages 2+.

How long does the session last?

Slime Creations sessions last for 30 minutes.

In order for your session to start on time, it’s important to be at the Creative Studio at least 5 minutes before the start time. 

Slime Creations: What can you expect from the activity?

If you’ve got a child who loves getting messy and creative, Slime Creations at Haven is one of those activities that’s guaranteed to be a hit. It’s a calm, indoor option that’s ideal for a bit of downtime or a rainy afternoon. Plus, it’s not every day your child gets permission to make a gooey, glittery mess!

The session usually costs around £7 (2025 price), depending on the park, and lasts around 30 minutes. It’s a great price for an activity where your child gets to bring something home – their very own pot of personalised slime!

Hands holding and stretching blue glittery slime from a pot using a stick during an activity at Haven Caister-on-Sea.

You’ll need to check in with the activities team just before the session starts. Once you’re checked in, the children are guided to a table where all the materials are ready and waiting. Sometimes tables are set out in a certain way, to ensure siblings and friends booked on together can sit together, so just make sure you’re sitting in the right place.

Each child gets to choose their own colours and mix-ins – think glitter, foam beads, and even sequins – and the staff talk them through each step, from combining the ingredients to kneading the slime until it’s just right. It’s all very child-friendly, and the team are great at keeping things fun and stress-free (even when things get a bit sticky!).

Finished blue glitter slime spread on a tray next to an empty pot and a wooden stick at Haven Caister-on-Sea.

The hardest part of making the slime is mixing everything together and making sure the slime isn’t super sticky. This can take some time and smaller children might get frustrated. Staff are on hand to help out though and they walk around all the time to check on everyone.

You don’t need to worry about bringing anything – everything is provided, and there are plenty of wipes and aprons if needed. At the end of the session, the children get to take their pot of slime away in a little tub, which is always a big hit.

A close-up of a purple-lidded slime pot labelled "My Slime – Made By", held up in front of craft shelves at Haven Caister-on-Sea.

Slime Creations is popular, so it’s worth booking in advance through the Haven app or website to make sure you don’t miss out, especially during the busier school holiday weeks. It’s also worth noting that younger children may need a bit of help from you – you’re welcome to stay and give them a hand.

Discover more activities at Haven

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