I just use a plastic adapter.
As for simple one, I will not recommend cheaper TP-Link ones which the HW configuration keeps changing and the performance is not good.
In fact, no point buying from Taobao either, as you can get TP-Link Archer AX72 AX5400 BNIB from Carousell, at around S$75 to S$80.
If you want to buy higher end TP-Link routers from Taobao, you can check out this thread.
https://forums.hardwarezone.com.sg/threads/tl-xtr7880.6722433/
Asus ones will be more suitable as the HW/FW is the same for the common models, yet the China version is much cheaper than Singapore models.
If you are not using Singtel ONT (need to use Singtel VLAN), then it is also okay to choose other cheap routers. The following Youtube Video recommends a few models.
1) Xiaomi AX3000T seems to be the low cost (about RMB189) yet good one. TP-Link XDR-3001 is not bad but not as good as Xiaomi AX3000T.
2) Asus TX-AX6000 天选路由器 is a China specific model with very good price-peformance ratio, similar to TUF-AX6000 in terms of HW spec but with some FW differences.
3) Asus TUF 小旋风Pro is another China specific model, similar to TUF-AX3000 v2.
Reference:
No 1 -->Asus TX-AX6000 天选路由器 (about RMB 899)
No 3 --> TP-Link XTR8488 (about RMB 1199)
No 5 --> Asus TUF 小旋风Pro (about RMB 699)
No 11 --> XIaomi AX3000T (about RMB 189)