Maybe toy isn’t the right word but it:
Was a bit like Hama beads but the sort of stuck into the frame. You didnt fix them like Hama you would pull it apart and make something else. It was that sort of scale other peg/mosaic things I’ve googled seem to have big pegs they were small but had different sizes so might be 1-4 pegs wide.
I think we got it 2nd hand from a boot sale or jumble sale so early 90s or 80s. I think the box was red.
Anybody remember it or have I imagined it 