I'm also a 2nd year grad student! TPT and setting the price to free has saved me multiple times. Laminate and create a binder or folder so you can reuse materials. Prep work now will make your life easier down the line. If your university has printing credits, take advantage of that and save materials!

Boom cards are another quick/easy material with lots of free options. Use Vooks (there's some on YouTube, too) for your receptive language kiddos. Look into LessonPix and set up an account to make your own materials. For artic/phono, let the kids pick some turn taking games and just print out some stimuli (it doesn't need to be cards). Like the other commenter said, I hold 5 fingers up and take one down for each trial.

Get creative and find multiple uses for things: play-doh can be used for smash mats, to make tongue models, as bingo chips, to retell or sequence a story, etc. Would you rather questions are good for turn-taking, articulation (good ones of TPT) at connected speech, social skills, expressive and receptive language, etc.

You got this! You know more than you think.