From watching my mother in law on hers I 'd say they were long rather than large.  No getting away from the length as they need to be wide enough to do a front of a jumper.

There are little round ones for socks - but they are few and expensive.

Bogwoppit's first entry (there may not be another but I can hope)

World book Day - Lift the flap - Human body.

My youngest helped me draw internal organs on a plain t-shirt. I sewed a rib cage from a funny brushed fabric. Thought it was felt but it is woven and frays so I did a narrow zigzag around all the edges before cutting the holes. Used a permanent marker to highlight edges under instruction from the wearer and drew a spine and shoulder blades on the solid back. Sternum is double and has velcro so it can be opened to show the organs.

Skin coloured waistcoat from lining material. I used Oliver and S parachute polo as a base shape and added front button bands and velcro. Neck and arms are bias bound.  My husband said why are you taking so much time over that - I was practicing techniques on a fabric I've not used before.

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Might managed a modelled pic in the morning.

Skin waistcoat done bar fastenings and edges. Made another of felt to be cut up into ribcage. Thought that was easier than separate construction.

Next installment after school. Our school do the dressing up on Friday so I have an extra day. Also do t have to dress up when I go in to help tomorrow!

I used to do a lot of cross stitch and only used a hoop on floppy linen that I needed to keep square.

My poppy and corn circle on a napkin gets used in church every remembrance Sunday and I'm always amazed that I did it when I was still at school. I copied the design from a library book onto graph paper with coloured pencils.

How about these?
Petite Pegs for Patterns for Pirates

They are free and could easily be lengthened.

The Basil bit is Lisa B(ackwards).

I have done in the past, rarely nowadays. Don't knit as much as I used to. Last time I went on three quarters of the forums I used to follow had died a death.

I did ladder stitch when making balls from pentagons. Don't see why it cant be used flat.