Sensory boxes are great for inquisitive little minds. Sand boxes, quiet books, ball pits, rolling balls back and forth, races, peak-a-boo, animal characters, puzzles, memory

Climbing the playground structures. Skills Developed. …
Play dough fun. Play dough is lots of fun and has many benefits. …
Rumble play. Skills Developed. …
Feather blowing. Skills Developed. …
Doodle fun with chalk. …
Spice it up. …
Dancing Caterpillar. …
Messy play: Pool of flowers.
https://chicklink.com/activities-for-18-24-month-olds/

Pat a Cake, Peek a Boo, Incy -Wincy any hand movement songs are great for engaging at this age. Check out you local library, join a play group and exchange ideas with other mothers. The Wiggles DVD’s and Playschool on TV are a great start.

Both my girls loved playing memory.

Activity tables are fun for them. Even just rolling a ball to each other is fun for them

Kmart have some really good. CHeap games

I hope you found some fun activities to do with your kid in summer. Now that it is colder and they are a bit older, I would suggest (weather permitting) go to a local park and find items from nature (leaves, sticks, pretty stones) and let your kid go nuts with some paint and glue. You could even help them make a pet rock

Also Blocks are fun to build stuff with, make buildings etc.

Finger painting is always fun and cheap. Do hand and feet prints on paper

indoor / outdoor bowling – all you need is a ball and some cans or empty bottles – you can also stack the cans outdoors and have them throw the ball

Building blocks, playdoh, finger painting, singing, dancing (wiggles are a favourite here), chasey aroun the backyard, go somewhere and feed the sucks, playground, kindergym, play groups, Saucepan musical…

Doing some simple cooking, Playdough or donut or biscuit decorating.

going to parks are great to go to and fun getting one of those 3in 1 trike are great and he can ride his bike and that is fun, painting is great or getting some chalk and drawing outside is great

have a look on pinterest that is great for ideas

and balloons are great too! They’re cheap and they keep my kids entertained for hours! You can blow up one of each colour to play colour learning games. Just watch them to make sure they don’t pop them and choke.

You can make play dough and paint with ingredients that are in your pantry! Water play is great too, and free! Or give him a paintbrush and a cup of water and encourage him to paint the fence or his trike or something else. Make a cubby house. If you have cement anywhere at home use chalk to draw a little town with roads to drive his toy cars around on. Both my kids have loved drawing and colouring in from a young age too.

Outdoors are great with an 18 month old – we spend a lot of time playing chasey around a tree, hide and seek in the vege garden, sweeping the path (he throws the dirt, I sweep, then we swap). I find if we both go outside he comes up with games and I just join in. For inside play we put music on and play follow the leader, play with each other in and out of a cheap plastic tunnel, read, paint, play cars, cook (both pretend and real food), climb the furniture, play in the mirror, etc.

Play in puddles after its rained, hammering pegs into holes, chasey, peek-a-boo, action songs (Row Row, Round and Round the Garden etc). Dance. Make drum kits using pots and pans. Use empty drink bottles to make skittles, use different empty containers to make musical instruments (bottles with rice for maracas). Make your own paint out of flour, sugar, water and food colouring and paint. Buy some chalk and draw on the cement outside (or paint an old wooden coffee table black and create a blackboard to draw on).

Play ball – rolling, kicking, throwing, catching. Build sand castles in sandpits, jigsaw puzzles, shape sorters, stacking blocks, Lego, cars, build cubbies

blocks, interactive books, music, cards, finger paint.