I would advise the clear plastic foraging toys and fill them with food/treats your bird loves as motivation to play. I've found that birds who aren't very toy motivated are more keen to play with toys that can easily be shredded too like toys made out cupcake wrappers like this:
are Amazon and ebay the only places you're willing to buy from?
I too have a somewhat lazy bird and I have found this to be a process of total trial and error (and individualization). Some of the best toys (according to reviews) never get touched...But Noodles does have her preferences....There are certain toys that she likes EVERY time, even years later (among all of her wooden toys, there are some that look similar and get ignored, but a few of them--for whatever reason, are hits every time..(post- initial introduction phase). I don't think this applies to all birds, but I am trying to say that you sometimes have to try a bunch of stuff until you find one thing that works and then examine that toy and ask yourself what made it better-- was it the size, the beads, the texture, metal vs plastic, soft-wood or hard, strings, paper etc. Noodles prefers toys for smaller birds because the ones made for birds her size tend to be too imposing and the wood is harder to chew. She likes instant gratification from biting wood.
Also- consider the fact that you need to potentially model playing with toys and allow your bird to get used to them before putting them in the cage (setting them nearby for a few days, then modeling play for a few days...and introducing them slowly).
What motivates your bird? If it is food, you could try target training him to a toy, he touches it with his beak and gets a treat...over time, this might enhance his interest in general.
I think your best bet is to buy a wide variety of toys different from what you have now and see if he shows interest in any (remember, it takes time).
Mine really does like the c-links that they sell as toys for rats and birds online...little colorful plastic links that can be strung together...
She also likes the bird-kabob shredder toys (like balsa wood sort of...strung onto rope--the name is bird kabob)
She also likes wood beads that she can snap off. This is a favorite toy-- BUT before you order, beware (I ordered one a few days ago and got a different product in the mail...so maybe wait until they straighten that mess out)
https://www.amazon.com/gp/product/B01DOU1T20/ref=ppx_yo_dt_b_asin_image_o02_s00?ie=UTF8&psc=1
Again-- this is just my bird though...yours likely will have dif preferences.
