Hello, I'm planning on having an Alice in Wonderland themed sweet sixteenth next week and I'm having the same problem thinking of things to do, but here's some ideas that I have come up with:
Make topiary bushes out of an oasis sphere (can be bought from a florist, if not use styrofoam) and a broom handle. Attach them together and stick in fake white and red roses to create a "painting the roses red" feel. Also use lawn flamingos and hedgehog stuffed toys to have the croquet look. You can also have lots of teapots around. Maybe one big one with the doormouse peeking out of the top (stuffed toy.) Also I have bought an inflatable bottle of the internet (not too expensive) and I am going to attach a drink me label on it with cardboard and string and put it in the room. Decks of cards are a must and they can be placed almost anywhere, on the walls, tables, floor, even hang them from the ceiling with fishing wire if you can reach! Also I have bought A4 size cards from the internet and am going to glue them together to make a house of cards! Also, if you can (I'm currently struggling to find these), get some plastic tea sets and glue them stacked up leaning to the side, it will make a fab centrepiece. Also pocketwatches and clocks are cool to hang around. If you can, find a giant key and you can put it somewhere. Oh, and I almost forgot, I have made out of wood a signpost. I have nailed the sign bits onto the post really wonky so it looks wonderland-like. I have wrote things like "This way", "That way", "Yonder", "Up" and "Down" on them. This looks great!
Food can be either finger sandwiches and tea like the tea party, or you can do what I'm doing and just do cakes and biscuits, (as we are having food somewhere else beforehand!) The cakes and biscuits can read Eat me or they can be in the shape of hearts (for the queen of hearts) ,cards , cats or rabbits etc. The drinks can be labeled drink me!
You could play flamingo croquet, or card games with your friends. You could even play spin the teapot or bottle but it will have to be again labelled drink me! Everyone will have to be dressed as a character from Alice in Wonderland, but if they are not the dressing up type, tell them that they can dress in foolish attire, for all to admire. This can be bright colours, clothes inside out, big hats etc.!
Hope this helps you and enjoy your very merry unbirthday party! hehe!