Girt ideas please for 8,5 and 3 year olds

[SOT3]

Please can anyone suggest any ideas for gifts for an 8yo boy, 5yo girl and 3yo girl?

Budget around £40 for each child.

They have already got all the usual things like scooters and bikes, pushchairs etc and I would like to get them all a nice age appropriate gift that would enjoy using.

Lego set each?

Clothing items like t-shirts, fluffy socks, gloves/mittens, hoodies
Something related to their favorite cartoons or shows like figurines, keychains, stickers, plushies etc. You can also make posters from pictures of their favorite characters (here is a guide to do that) and print them out
Tempopary tattoos sets
DIY or science kits
Nice stationery maybe?
Arts and crafts supplies
Lego sets are always a hit

Thank you very much for your helpful ideas.

Entertaner have some great deals.

Curlimals are a FIVER
Curlimals Higgle Hedgehog Electronic Pet | The Entertainer https://share.google/XqhAn8POoQRUWjIne

When my dd was 5, she was obsessed with the Melissa and Doug ice cream role play set.

Thank you all for your great suggestions.