Activities for letters and number mad 2.5YO

[hippityhippityhop]

DS ( 2.5) is absolutely obsessed with letters and numbers. Can anyone recommend activities, games etc to help him develop his skills? Happy to buy things or make them from resources we already have. Thanks

We got some cards spelling simple words with wooden letters from amazon for christmas stocking.

We had a lovely Letterland jigsaw that DCs loved doing and Letterland Snap. A box of sand to try and write in; we had a number mat and I would shout out numbers and they would jump onto that number (later we did this to practise number bonds); we had letters for in the bath and magnetic ones on the fridge.